Browse by Railroad
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- A -- A&R Line Railroad (A&R) (1)
- AT&L Railroad (ATLT) (2)
- Aberdeen Carolina & Western Railway (AC&W) (9)
- Abilene & Smoky Valley Railroad (ASV) (1)
- Abilene & Southern Railway (AS) (2)
- Abingdon Coal & Iron Railroad (AC&I) (4)
- Adirondack Railway (ADIR) (1)
- Adirondack Scenic Railroad (ADIX) (5)
- Adrian & Blissfield Railroad (ADFB) (3)
- Ahnapee & Western Railway (A&W) (3)
- Akron, Canton & Youngstown Railroad (AC&Y) (2)
- Alabama & Gulf Coast Railway (AGR) (3)
- Alabama & Tennessee River Railway (ATN) (10)
- Alabama Central Railroad (AC) (1)
- Alabama Great Southern Railroad (AGS) (2)
- Alabama Midland Railroad (AMID) (1)
- Alabama Power Co. (APC) (1)
- Alabama Southern Railroad (ABS) (1)
- Alabama, Tennessee & Northern Railroad (AT&N) (1)
- Alameda Belt Line (ABL) (2)
- Alameda Corridor (ACTA) (3)
- Alaska Railroad (ARR) (26)
- Albany & Eastern Railroad (AERC) (3)
- Albany & Susquehanna Railroad (A&S) (7)
- Albia & Centerville Railway (A&C) (1)
- Albia Interurban Railway (AIRy) (1)
- Alexander Railroad (ARC) (1)
- Algers, Winslow & Western Railway (AW&W) (1)
- Allegheny & Eastern Railroad (ALY) (1)
- Allegheny Portage Railroad (5)
- Allegheny Valley Railroad (AVR) (8)
- Allentown & Reading Traction Co. (A&RT) (1)
- Altamont Corridor Express (ACE; HTSX) (4)
- Alton, Granite, & St. Louis Traction Co. (AG&StL) (1)
- Amador Central Railroad (AMC) (1)
- Amador Foothills Railroad (AFRR) (1)
- American Railroad Co. of Puerto Rico (ARR) (27)
- Ames & College Railway (A&C) (1)
- Amtrak (AMTK) (434)
- Amtrak California (CDTX) (19)
- Amtrak Cascades (17)
- Anacostia & Potomac River Railroad (2)
- Androscoggin & Kennebec Railway (A&K) (4)
- Angelina & Neches River Railroad (ANR) (1)
- Ann Arbor & Ypsilanti Street Railway (AA&Y) (1)
- Ann Arbor Railroad (AA) (6)
- Ann Arbor Railroad (1895-1976) (AA) (2)
- Apache Railway (APA) (1)
- Apalachicola Northern Railroad (1)
- Appalachian & Ohio Railroad (AO) (7)
- Appanoose County Community Railroad (APNC) (11)
- Arcata & Mad River Railroad (AMR) (1)
- Arizona & California Railroad (ARZC) (1)
- Arizona & New Mexico Railroad (A&NM) (2)
- Arizona Central Railway (AZCR) (3)
- Arizona Eastern Railroad (AE) (5)
- Arizona Eastern Railway (AZER) (5)
- Arkansas & Missouri Railroad (AM) (23)
- Arkansas Midland Railroad (AKMD) (3)
- Arkansas Southwestern Railroad (ARSW) (1)
- Arkansas Valley Interurban Railroad (AVI) (6)
- Arkansas, Louisiana & Mississippi Railroad (ALM) (1)
- Arkansas-Oklahoma Railroad (AOK) (7)
- Aroostook Valley Railroad (AVR) (2)
- Ashland Railway (ASRY) (7)
- Atchison, Topeka & Santa Fe Railway (ATSF) (247)
- Atlanta & Birmingham Air Line Railway (1)
- Atlanta & West Point Railroad (A&WP) (1)
- Atlanta, Birmingham & Atlantic Railroad (AB&A) (1)
- Atlanta, Birmingham & Atlantic Railway (AB&A) (1)
- Atlanta, Birmingham & Coast Railroad (AB&C) (1)
- Atlanta, Birmingham & Coast Railway (AB&C) (1)
- Atlantic & Danville Railroad (AD) (1)
- Atlantic & East Carolina Railway (AEC) (2)
- Atlantic & Gulf Railroad (GFRR) (2)
- Atlantic & Lake Superior Railroad (A&LS) (1)
- Atlantic & Pacific Railroad (1)
- Atlantic & Yadkin Railway (A&Y) (1)
- Atlantic City Railroad (ACR) (1)
- Atlantic Coast Line Railroad (ACL) (56)
- Atlantic Shore Line Railway (ASL) (4)
- Atlantic and Yadkin Railway (1)
- Atlantic, Mississippi, & Ohio Railroad (AM&O) (6)
- Auburn & Rochester Railroad (A&R) (3)
- Aurora, Elgin & Chicago Railway (AE&C) (14)
- Aurora, Elgin & Fox River Electric Co. (AE&FRE) (6)
- Aurora, Plainfield & Joliet Railway (AP&J) (1)
- Austin Area Terminal Railroad (AUAR) (5)
- Avon Beach & Southern Electric Railway (AB&S) (2)
- B -- BHP Nevada Railroad (BHP) (1)
- BNSF Railway (BNSF) (1,050)
- Ballard & Thompson Railroad (B&T) (7)
- Ballard Steam Railroad (BTFD) (1)
- Ballard Terminal Railroad (BTRC) (1)
- Ballston Terminal Railroad (BTR) (3)
- Baltimore & Annapolis Railroad (BLA) (2)
- Baltimore & Annapolis Shortline Railroad (B&ASL) (1)
- Baltimore & Eastern Railroad (B&E) (3)
- Baltimore & Ohio Chicago Terminal Railroad (B&OCT; BOCT) (5)
- Baltimore & Ohio Railroad (B&O; BO) (285)
- Baltimore & Ohio Southwestern Railroad (B&OSW) (2)
- Baltimore & Potomac Railroad (B&P) (1)
- Baltimore Transit Co. (BTCO) (8)
- Baltimore, Chesapeake & Atlantic Railway (BC&A) (2)
- Bangor & Aroostook Railroad (BAR) (29)
- Bangor & Piscataquis Railroad (BAPI) (6)
- Bangor Railway & Electric Co. (BR&E) (1)
- Barre and Chelsea Railroad (1)
- Batey Columbia Railroad (1)
- Baton Rouge, Hammond & Eastern Railroad (BRH&E) (1)
- Batten Kill Railroad (BKRR) (10)
- Bay Area Rapid Transit (BART) (3)
- Bay Colony Railroad (BCLR) (6)
- Bay State Street Railway (BSSR) (1)
- Beaufort & Morehead Railroad (BMH) (2)
- Beaver Valley Traction Co. (1)
- Becker Farm Railroad (1)
- Belfast & Moosehead Lake Railroad (B&ML) (3)
- Bellevue & Cascade Railroad (B&C) (3)
- Bellingham & Northern Railway (B&N) (1)
- Bellingham & Skagit Interurban Railway (B&SI) (4)
- Bellingham Bay & British Columbia Railroad (BB&BC) (1)
- Belt Railway of Chicago (BRC) (6)
- Belvidere Delaware Railroad (Bel-Del) (4)
- Bennington & Hoosick Valley Railway Co. (B&HV) (2)
- Berkshire Street Railway (BSR) (9)
- Bessemer & Lake Erie Railroad (BLE) (11)
- Birmingham & Southeastern Railway (B&SE) (1)
- Birmingham Mineral Railroad (BMAL) (1)
- Birmingham Southern Railroad (BS) (4)
- Black Hollow Coal Company Railroad (1)
- Black River & Western Railroad (BRW) (4)
- Blacklands Railroad (BLR) (3)
- Bloomer Shippers Connecting Railroad (BLOL) (4)
- Bloomington & Normal Railway, Electric & Heat Co. (B&NRE&H) (1)
- Bloomington Southern Railroad (BS) (2)
- Bloomington, Pontiac, & Joliet Interurban Railroad (BP&J) (1)
- Blue Ridge Railroad (BR) (5)
- Blue Ridge Scenic Railway (BRSR) (1)
- Bluegrass Railroad and Museum (BGRM) (1)
- Boise & Interurban Railway (B&I) (2)
- Boise Valley Railway (BVRy) (3)
- Boise Valley Traction Co. (BVT) (2)
- Boise, Nampa & Owyhee Railroad (BN&O) (1)
- Boone & Scenic Valley Railroad (B&SV; BSVX) (4)
- Boonton Line (1)
- Bootheel Regional Rail Corporation (BRR) (1)
- Boston & Albany Railroad (B&A; BA) (88)
- Boston & Lowell Railroad (B&L) (2)
- Boston & Maine Railroad (B&M; BM) (348)
- Boston & New York Air-Line Railroad (B&NY) (17)
- Boston & Providence Railroad (B&P) (13)
- Boston & Worcester Railroad (B&W) (7)
- Boston & Worcester Street Railway (B&W) (1)
- Boston Elevated Railway (BERy) (6)
- Boston, Hartford & Erie Railroad (BH&E) (12)
- Boston, Revere Beach & Lynn Railroad (BRB&L) (2)
- Bountiful Grain & Craig Mountain Railroad (BG&CM) (5)
- Branson Scenic Railway (BST) (1)
- Brattleboro & Whitehall Railroad (1)
- Bridgton & Saco River Railroad (B&SR) (1)
- Broadway & Cohoes Railway (1)
- Brooklyn Rapid Transit (BRT) (4)
- Brooklyn-Manhattan Transit Corporation (BMT) (3)
- Buckingham Branch Railroad (BB) (1)
- Buffalo & Pittsburgh Railroad (BPRR) (44)
- Buffalo & Southwestern Railroad (5)
- Buffalo & Susquehanna Railroad (B&S) (2)
- Buffalo Bayou, Brazos, & Colorado Railway (BBB&C) (1)
- Buffalo Creek Railroad (2)
- Buffalo Ridge Railroad (BFRR) (2)
- Buffalo Southern Railroad (BSOR) (5)
- Buffalo, Lockport & Rochester Railway (BL&R) (2)
- Buffalo, Rochester & Pittsburgh Railroad (BR&P) (20)
- Burlington & Lamoille Railroad (B&L) (1)
- Burlington & Missouri River Railroad (B&MR) (3)
- Burlington & Southwestern Railroad (B&SW) (1)
- Burlington Northern Railroad (BN) (314)
- Burlington Railway & Light Co. (BR&L) (1)
- Burlington, Cedar Rapids & Northern Railway (BCRN) (119)
- Burlington, Muscatine & Northwestern Railway (BM&NW) (11)
- Burlington-Rock Island Railroad (BRI) (1)
- Butte, Anaconda & Pacific Railway (BAP) (3)
- Buzzi Unicem (PVTX) (1)
- Byron Railroad Ltd. (BYRON) (1)
- C -- CG Railway (CGR) (1)
- CSX Railroad (CSX) (1,244)
- Cable Car (3)
- Caddo Valley Railroad (CVYR) (6)
- Caguas Tramway (2)
- Cairo & Fulton Railroad (3)
- Cairo & Vincennes Railroad (CAVI) (6)
- Cairo Electric & Traction Co. (1)
- California & Oregon Railroad (1)
- California Central Railroad (1)
- California Northern Railroad (CNFR) (3)
- California Northwestern Railroad (1)
- California Western Railroad (CWR) (1)
- California, Shasta & Eastern Railway (CS&E) (1)
- Caltrain (CALT; JPBX; PJPB) (15)
- Calumet & Helca Railroad (C&H) (1)
- Camas Prairie Railroad (CSP) (8)
- Camp Chase Industrial Railroad (CCRA) (1)
- Canadian National Railway (CN) (442)
- Canadian Northern Railway (CNoR) (1)
- Canadian Pacific Railway (CP) (449)
- Canajoharie & Catskill Railroad (C&C) (2)
- Cane Belt Railroad (1)
- Caney Fork & Western Railroad (CFWR) (4)
- Canton Railroad (CTN) (2)
- Cape Fear & Yadkin Valley Railway (1)
- Cape May Seashore Lines (CMSL) (3)
- Capital Traction Co. (2)
- Capital Transit Co. (2)
- Carbon Electric Street Railway (1)
- Carolina & Northwestern Railroad (Ca&NW) (1)
- Carolina Coastal Railway (CLNA) (2)
- Carolina Rail Services Inc. (CRIJ) (1)
- Carolina Southern Railroad (CALA) (2)
- Carolina, Clinchfield & Ohio Railroad (CCO) (43)
- Carrizo Gorge Railway (CZRY) (1)
- Carthage, Knightstown, & Shirley Railroad (CKS) (2)
- Cascade & Columbia River Railroad (CSCD) (4)
- Catasauqua & Fogelsville Railroad (C&F) (3)
- Catawissa Railroad Co. (CRC) (1)
- Catawissa, Williamsport & Erie Railroad (CRR) (1)
- Catskill Mountain Railroad (CMRR) (6)
- Cañon City & Royal Gorge Railroad (CC&RG) (1)
- Cedar Rapids & Iowa City Railway (CIC; CRandIC) (30)
- Cedar Rapids, Iowa Falls & Northern Railway (CRIF&N) (4)
- Cedar River Railroad (CEDR) (4)
- Cedar Valley Railroad (CVAR) (2)
- Centerville & Southwestern Railroad (C&S) (1)
- Centerville, Albia, & Southern Railway (CA&S) (4)
- Central California Traction Co. (CCT) (3)
- Central Canovanas Railroad (2)
- Central Coloso Sugarcane Railway (1)
- Central Illinois Railroad (CIRY) (1)
- Central Indiana Railway (CIRwy) (5)
- Central Iowa Railway (CIAR) (3)
- Central Kansas Railway (CKRY) (2)
- Central Maine & Québec Railway (CMQ) (28)
- Central Massachusetts Railroad (23)
- Central Michigan Railway (CM) (1)
- Central Midland Railway (CMR) (10)
- Central Montana Railway (CM) (4)
- Central New England Railroad (CNZR) (1)
- Central New England Railway (CNE) (15)
- Central New York Railroad (CNYK) (14)
- Central Oregon & Pacific Railroad (CORP) (25)
- Central Pacific Railway (CPRR) (31)
- Central Railroad of Indiana (CIND) (20)
- Central Railroad of Indianapolis (CERA) (5)
- Central Railroad of New Jersey (CNJ) (56)
- Central Santa Juana Sugarcane Railway (1)
- Central Vermont Railway (CV) (64)
- Central Washington Railroad (CWRR) (1)
- Central of Georgia Railway (CG) (20)
- Central of Tennessee Railway & Navigation Co. (CTRN) (4)
- Chambersburg & Gettysburg Electric Railway (C&G) (2)
- Charles City Western Railway (CCW) (9)
- Charles River Railroad (3)
- Charleston & Savannah Railway (C&S) (2)
- Charlotte Harbor & Northern Railway (CH&N) (6)
- Chattahoochee Bay Railroad (CHAT) (1)
- Chattahoochee Valley Railway (CHV) (1)
- Chelatchie Prairie Railroad (BYCX) (2)
- Cheney Railroad (CHNY) (1)
- Chesapeake & Albemarle Railroad (CA) (3)
- Chesapeake & Indiana Railroad (CKIN) (1)
- Chesapeake & Ohio Railway (C&O; CO) (63)
- Chesapeake Western Railway (CHW) (1)
- Cheshire Railroad (5)
- Cheshire Street Railway (5)
- Chessie System (95)
- Chester & Delaware River Railroad (C&DR) (1)
- Chicago & Alton Railroad (C&A) (50)
- Chicago & Atlantic Railway (2)
- Chicago & Eastern Illinois Railroad (CEI) (34)
- Chicago & Erie Railroad (C&E) (1)
- Chicago & Great Eastern Railway (C&GE) (5)
- Chicago & Illinois Midland Railway (C&IM) (12)
- Chicago & Illinois Valley Railway (C&IV) (9)
- Chicago & Illinois Western Railway (C&IW) (1)
- Chicago & Indiana Railroad (C&I) (1)
- Chicago & Interurban Traction Co. (C&IT) (1)
- Chicago & North Western Railway (CNW) (1,083)
- Chicago & Northern Pacific Railroad (C&NP) (1)
- Chicago & Western Indiana Railroad (CWI) (7)
- Chicago Great Western Railway (CGW) (158)
- Chicago Junction Railway (CJR) (2)
- Chicago Rapid Transit Company (CRT) (5)
- Chicago Southern Railway (CSRy) (2)
- Chicago Surface Lines (CSL) (19)
- Chicago Terminal Railway (CTM) (3)
- Chicago Terminal Transfer Railroad (CTT) (5)
- Chicago Transit Authority (CTA) (29)
- Chicago, Anamosa & Northern Railroad (CA&N) (4)
- Chicago, Aurora & DeKalb Railway (CA&D) (2)
- Chicago, Aurora & Elgin Railroad (CA&E) (18)
- Chicago, Bellevue, Cascade & Western Railroad (CBC&W) (3)
- Chicago, Burlington & Quincy Railroad (CBQ) (347)
- Chicago, Central & Pacific Railroad (CC) (65)
- Chicago, Cincinnati & Louisville Railroad (CC&L) (1)
- Chicago, Fort Wayne & Eastern Railroad (CFE) (1)
- Chicago, Ft. Wayne, & Eastern Railroad (CFE) (5)
- Chicago, Indiana & Southern Railroad (CI&S) (8)
- Chicago, Indianapolis, & Louisville Railway (CIL) (21)
- Chicago, Kansas & Nebraska Railway (CK&N) (2)
- Chicago, Kansas & Western Railroad (CK&W) (2)
- Chicago, Madison & Northern Railroad (CM&N) (2)
- Chicago, Milwaukee & Gary Railway (CM&G) (5)
- Chicago, Milwaukee & Puget Sound Railway (CM&PS) (1)
- Chicago, Milwaukee, St. Paul & Pacific Railroad (MILW; CMStP&P; CMStP) (823)
- Chicago, Missouri & Western Railway (CM&W; CMNW) (2)
- Chicago, North Shore & Milwaukee Railroad (CNSM) (13)
- Chicago, Ottawa & Peoria Railway (CO&P) (10)
- Chicago, Rock Island & Pacific Railroad (RI; CRIP; ROCK) (869)
- Chicago, Rock Island, & Gulf Railway (CRIG) (9)
- Chicago, South Shore, & South Bend Railroad (CSS) (10)
- Chicago, St. Paul & Fond du Lac Railroad (CStP&FdL) (1)
- Chicago, St. Paul, Minneapolis & Omaha Railway (CMO) (73)
- Chicago, Terre Haute & Southeastern Railway (CTH&S) (4)
- Choctaw, Oklahoma & Gulf Railroad (CO&G) (21)
- Cincinnati & Chicago Air-Line Railroad (1)
- Cincinnati & Columbus Traction Co. (C&C) (3)
- Cincinnati & Lake Erie Railroad (C&LE) (3)
- Cincinnati & Muskingum Valley Railroad (C&MV) (1)
- Cincinnati Belt Line Railroad (1)
- Cincinnati Northern Railroad (CNOR) (2)
- Cincinnati Southern Railway (CNTP) (25)
- Cincinnati, Bluffton, & Chicago Railroad (CB&C) (1)
- Cincinnati, Hamilton, & Dayton Railroad (CH&D) (7)
- Cincinnati, Indianapolis & Western Railroad (CIWN) (2)
- Cincinnati, Jackson & Mackinaw Railroad (CJ&M) (1)
- Cincinnati, Jackson & Michigan Railway (CJ&M) (1)
- Cincinnati, Lebanon, & Northern Railroad (CL&N) (2)
- Cincinnati, New Orleans, & Texas Pacific Railway (CNO&TP; CNTP) (20)
- Cincinnati, Richmond, & Muncie Railroad (2)
- Cincinnati, Van Wert & Michigan Railroad (CVW&M) (1)
- Cincinnati, Wabash & Michigan Railway (CW&M) (1)
- Citizens Traction Co. (3)
- City & Suburban Railway (1)
- City of Prineville Railway (COP) (1)
- Claremont Concord Railroad (CCRR) (9)
- Clarendon & Pittsford Railroad (CLP) (8)
- Cleveland & Columbus Railroad (C&CRy) (1)
- Cleveland & Eastern Traction Co. (C&ET) (1)
- Cleveland Railway (4)
- Cleveland Southwestern Railway & Light Co. (CSW) (1)
- Cleveland Terminal & Valley Railroad (CT&V) (1)
- Cleveland Transit System (CTS) (1)
- Cleveland Union Terminal Railroad (CUT) (1)
- Cleveland, Akron, and Columbus Railroad (1)
- Cleveland, Cincinnati, Chicago & St. Louis Railway (CCC&StL) (95)
- Cleveland, Columbus, Cincinnati & Indianapolis Railway (CCC&I) (2)
- Cleveland, Elyria & Western Railway (CE&W) (1)
- Cleveland, Painesville & Ashtabula Railroad (CP&A) (1)
- Cleveland, Painesville & Ashtabula Railroad (1848-1868) (CP&A) (1)
- Cleveland, Painesville & Eastern Railroad (CP&E) (2)
- Clinton, Davenport, & Muscatine Railway (CD&M) (31)
- Cloquet Terminal Railroad (CTRR) (1)
- Co-Operative Transit Co. (1)
- Colebrookdale Railroad (CRR) (6)
- Colorado & Southern Railroad (CS) (11)
- Colorado Midland Railroad (CM) (7)
- Columbia & Cowlitz Railway (CLC) (2)
- Columbia & Greenville Railway (C&GR) (2)
- Columbia & Port Deposit Railroad (C&PD) (3)
- Columbia & Red Mountain Railroad (C&RM) (2)
- Columbia Terminal Railroad (COLT) (20)
- Columbia, Newberry & Laurens Railroad (CNL) (1)
- Columbus & Greenville Railway (CAGY) (6)
- Columbus & Ohio River Railroad (COUH) (12)
- Columbus & Southern Ohio Electric Co. (C&SOE) (1)
- Columbus Consolidated Street Railway Co. (CCSR) (1)
- Columbus Railway Power & Light Co. (CRP&L) (1)
- Columbus, London & Springfield Railway (CL&S) (1)
- Columbus, Newark & Zanesville Traction Co. (CN&Z) (2)
- Columbus, Piqua, & Indiana Railroad (CP&I) (5)
- Commonwealth & Southern Corp. (1)
- Commuter Rail (421)
- Compañía de los Ferrocarriles de Puerto Rico (FCPR) (5)
- Concord & Manchester Electric Railway (2)
- Concord & Montreal Railroad (1)
- Concord Railroad (2)
- Conemaugh & Black Lick Railroad (C&BL) (3)
- Coney Island & Brooklyn Railroad (CI&B) (1)
- Conneaut & Erie Traction Co. (C&ET) (1)
- Connecticut Central Railroad (CCCL) (8)
- Connecticut Company (ConnCo) (16)
- Connecticut Railway & Lighting Co. (CR&L) (8)
- Connecticut River Railroad (6)
- Connecticut Southern Railroad (CSOR) (12)
- Connellsville Central Railroad (1)
- Conrail (CR) (820)
- Conrail Shared Assets Operations (CRCX) (60)
- Consolidated Railway (2)
- Consolidated Railway, Gas & Electric Co. (CRG&E) (2)
- Consumers Electric Light & Street Railway Co. (CEL&SR) (3)
- Conway Scenic Railroad (CSRX) (14)
- Cooperstown & Charlotte Valley Railroad (CACV) (3)
- Coos Bay Rail Link (CBR) (23)
- Copper Basin Railway (CBRY) (5)
- Copper Range Railroad (COPR) (6)
- Copper River & Northwestern Railway (CR&NW) (4)
- Cornwall & Lebanon Railroad (C&L) (3)
- Corry & Columbus Street Railway (1)
- Cortland County Traction Co. (CCT) (1)
- Corvallis & Eastern Railroad (C&E) (2)
- Council Bluffs Railway (CBGR) (1)
- Crawfordsville & Wabash Railroad (C&W) (1)
- Crooked Creek Railroad & Coal Co. (CCR) (2)
- Crystal City & Uvalde Railroad (CC&U) (1)
- Cumberland & Pennsylvania Railroad (C&P) (2)
- Cumberland Valley Railroad (CVRR) (16)
- Cumberland Valley Traction Co. (CVT) (2)
- Cumbres & Toltec Scenic Railroad (C&TS) (8)
- Cuyahoga Valley Scenic Railroad (CVSR) (2)
- D -- D&W Railroad (D&W) (6)
- Daggett-Calico Railroad (1)
- Daisy Line (1)
- Dakota & Iowa Railroad (DAIR) (8)
- Dakota Rail Incorperated (DAKR) (1)
- Dakota Southern Railway (DSRC) (3)
- Dakota, Minnesota, & Eastern Railroad (DME) (287)
- Dallas Area Rapid Transit (DART) (17)
- Dallas Northwestern Traction Co. (1)
- Dallas Railway & Terminal Co. (DR&T) (2)
- Dallas Southwestern Traction Co. (1)
- Dallas, Garland & Northeastern Railroad (DGNO) (3)
- Dallas-Terrell Interurban Railway Co. (1)
- Dana Lumber Co. (2)
- Danbury & Norwalk Railroad (D&N) (1)
- Dansville & Mount Morris Railroad (DMM) (1)
- Danville & Western Railway (D&W) (1)
- Dardanelle,Ola, & Southern Railroad (DO&S) (1)
- Dare Lumber Company Railroad (1)
- Davenport & Muscatine Railway (D&M) (18)
- Davenport & North Western Railway (D&NW) (2)
- Davenport & St. Paul Railroad (D&StP) (2)
- Davenport, Iowa & Dakota Railroad (DI&D) (2)
- Davenport, Rock Island, & Northwestern Railroad (DRINW; DRI&NW) (8)
- Dayton & Cincinnati Railroad (D&C) (1)
- Dayton & Troy Electric Railway (D&T) (2)
- Dayton Street Railway (2)
- Dayton, Covington & Piqua Traction Co. (DC&P) (1)
- Dayton, Springfield & Urbana Electric Railway (DS&U) (1)
- DeQueen & Eastern Railroad (DQE) (2)
- Decatur, Chesapeake, & New Orleans Railroad (DC&NO) (1)
- Delaware & Hudson Gravity Railroad (1)
- Delaware & Hudson Railway (DH) (91)
- Delaware & Ulster Railroad (DURR) (2)
- Delaware Coast Line Railroad (DCLR) (1)
- Delaware River Railroad (1)
- Delaware, Lackawanna & Western Railroad (DLW) (112)
- Delaware, Maryland & Virginia Railroad (DM&V) (1)
- Delaware-Lackawanna Railroad (DL) (3)
- Delray Connecting Railroad (DCAX) (4)
- Delta Southern Railroad (DSRR) (1)
- Denison & Southeastern Railway (1)
- Denver & Rio Grande Scenic Railroad (2)
- Denver & Rio Grande Western Railroad (DRGW) (135)
- Denver & Salt Lake Railway (D&SL) (40)
- Denver Tramway Co. (DTC) (2)
- Denver, Northwestern & Pacific Railway (DNW&P) (40)
- Denver, South Park & Pacific Railroad (DSP&P) (4)
- Depew, Lancaster & Western Railroad (DLWR) (4)
- Des Moines & Central Iowa Railway (DCI; DMCI) (15)
- Des Moines & Kansas City Railway (DM&KC) (1)
- Des Moines & Northern Railway (DM&N) (1)
- Des Moines & St. Louis Railroad (DM&StL) (1)
- Des Moines City Railway Co. (DMCRy) (3)
- Des Moines Railway (DMRy) (6)
- Des Moines Union Railway (DMU) (2)
- Des Moines, Adel & Western Railway (DMA&W) (1)
- Des Moines, Northern & Western Railroad (DMN&W) (1)
- Detroit & Lima Northern Railway (1)
- Detroit & Mackinac Railway (DM) (3)
- Detroit United Railway (DUR) (2)
- Detroit, Eel River, & Illinois Railroad (DER&I) (2)
- Detroit, Grand Rapids & Western Railroad (DGR&W) (1)
- Detroit, Jackson & Chicago Railway (DJ&C) (1)
- Detroit, Lansing & Northern Railroad (DL&N) (1)
- Detroit, Toledo & Ironton Railroad (DTI) (17)
- Detroit, Ypsilanti & Ann Arbor Railway (DY&AA) (1)
- Detroit, Ypsilanti, Ann Arbor & Jackson Railway (DYAA&J) (1)
- Dighton & Somerset Railroad (3)
- Disneyland Railroad (DLRR) (2)
- Dubois County Railroad (DCRR) (4)
- Duluth & Northeastern Railroad (DNE) (2)
- Duluth Street Railway (DSR) (1)
- Duluth, Missabe & Iron Range Railway (DMIR) (20)
- Duluth, Missabe & Northern Railroad (DMN) (3)
- Duluth, Rainy Lake, & Winnipeg Railway (DRL&W) (1)
- Duluth, South Shore, & Atlantic Railway (DSSA) (12)
- Duluth, Winnipeg & Pacific Railway (DWP) (10)
- Duluth-Superior Transit Co. (DST) (3)
- Dunderberg Spiral Railway (2)
- Durango & Silverton Narrow Gauge Railroad (DSNG) (5)
- Durbin & Greenbrier Valley Railroad (DGVR) (2)
- Durham and Southern Railway (1)
- E -- Eagle Mountain Railroad (EMRR) (6)
- East Broad Top Railroad & Coal Co. (EBT) (11)
- East Erie Commercial Railroad (EEC) (1)
- East Penn Railroad (ESPN) (6)
- East Portland Traction Co. (EPTC) (1)
- East St. Louis & Suburban (EStL&S) (1)
- East St. Louis, Columbia & Waterloo Railroad (EStLCW) (2)
- East Tennesse, Virginia & Georgia Railway (ETV&G) (1)
- East Tennessee & Georgia Railroad (ET&G) (2)
- East Tennessee & Western North Carolina Railroad (ETWN) (3)
- Eastern Alabama Railway (EARY) (1)
- Eastern Idaho Railroad (EIRR) (5)
- Eastern Kentucky Railroad (EK) (5)
- Eastern Maine Railway (EMRY) (7)
- Eastern Mass Street Railway (1)
- Eastern Ohio Traction Co. (EOT) (1)
- Eastern Railroad (8)
- Eastern Wisconsin Electric Co. (1)
- Easton & Northern Railroad (E&N) (1)
- Easton Transit Co. (ETC) (1)
- El Dorado & Wesson Railway (EDW) (2)
- El Dorado Western Railroad (EDW) (2)
- El Paso & Southwestern Railroad (EP&SW) (8)
- El Paso City Lines (EPCL) (4)
- El Paso Electric Railway (EPE) (3)
- Electric Short Line Railway (ESL) (1)
- Elgin & Belvidere Electric Co. (E&B) (3)
- Elgin, Aurora & Southern Traction Co. (EA&S) (1)
- Elgin, Joliet & Eastern Railway (EJE) (40)
- Elizabethtown & Paducah Railroad (E&P) (1)
- Elizabethtown, Lexington & Big Sandy Railroad (EL&BS) (3)
- Ellis & Eastern Railroad (EE) (4)
- Elmira, Corning & Northern Railway (EC&N) (1)
- Elmira, Corning & Waverly Railway (EC&W) (3)
- Empire Mining Co. (1)
- Empire State Railway (ESR) (1)
- Enos Electric Railway Company of St. Paul (1)
- Ensley Southern Railroad (ESRR) (1)
- Erie & Pittsburgh Railroad (EP) (1)
- Erie Lackawanna Railroad (EL) (189)
- Erie Railroad (ERIE) (164)
- Erie Western Railway (ERES) (3)
- Escanaba & Lake Superior Railroad (ELS) (14)
- Escanaba Street Railway (1)
- Escanaba Traction Co. (ETC) (1)
- Eureka Southern Railroad (EUKA) (4)
- European & North American Railway (E&NA) (4)
- Evansville & Indianapolis Railroad (E&I) (1)
- Evansville & Princeton Traction Co. (E&PT) (1)
- Evansville & Southern Indiana Traction Co. (E&SI) (1)
- Evansville Western Railroad (EVWR) (3)
- Evansville, Indianapolis, & Terre Haute Railway (EI&TH) (1)
- Evansville, Mount Carmel & Northern Railroad (EMC&N) (8)
- Evansville, Owensboro & Nashville Railroad (EO&N) (1)
- Evansville, Princeton & Vincennes Interurban Railway (EP&V) (1)
- F -- G -- Galena & Chicago Union Railroad (G&CU) (1)
- Galena & Southern Wisconsin Railroad (G&SWRR) (1)
- Galveston, Harrisburg, & San Antonio Railroad (GH&SA) (5)
- Galveston, Houston & Henderson Railroad (GH&H) (9)
- Galveston-Houston Electric Railway (G&HE) (4)
- Gateway Western Railroad (GWWR) (16)
- Genesee & Wyoming Inc. (G&W) (74)
- George's Creek & Cumberland Railroad (GC&C) (3)
- Georgetown Loop Railroad (GLRX) (4)
- Georgetown Railroad (GRR) (3)
- Georgia & Alabama Railway (G&ARy) (1)
- Georgia & Florida Railway (GFRR) (3)
- Georgia Central Railway (GC) (1)
- Georgia Northeastern Railroad (GNRR) (4)
- Georgia Northerneastern Railroad (GNRR) (1)
- Georgia Railroad (GA) (2)
- Georgia Southwestern Railroad (GSWR) (4)
- Glen Echo Railroad Co. (2)
- Grainbelt Corporation (GNBC) (1)
- Grand Canyon Railway (GCRY) (1)
- Grand Central Station Railroad (GCS) (1)
- Grand Rapids & Indiana Railroad (GR&I) (9)
- Grand Rapids, Grand Haven & Muskegon Railway (GRGH&M) (1)
- Grand Trunk Railroad (GT) (10)
- Grand Trunk Western Railroad (GTW) (15)
- Grant Street Electric Railway (1)
- Grapevine Vintage Railroad (GVRX) (1)
- Great Falls & Old Dominion Railroad (GF&OD) (1)
- Great Falls Street Railway (2)
- Great Miami & Scioto Railway (GMRY) (1)
- Great Northern Railway (GN) (222)
- Great Northwest Railroad (GRNW) (6)
- Great Smoky Mountains Railroad (GSM) (5)
- Great Southwest Railroad (GSW) (2)
- Greater Cleveland Regional Transit Authority (RTA) (5)
- Green Bay & Western Railroad (GB&W) (11)
- Green Mountain Railroad (GMRC) (15)
- Greenfield-Montague Transportation Authority (1)
- Greenville, Spartanburg, & Anderson Railroad (GS&A) (1)
- Greenwich & Johnsonville Railway (G&J) (13)
- Grenada Railway (GRYR) (1)
- Groton & Stonington Street Railway (G&S) (2)
- Guilford Rail System (GRS) (101)
- Gulf, Colorado & Santa Fe Railway (GC&SF) (19)
- Gulf, Colorado, & San Saba Railway (GCSR) (9)
- Gulf, Mobile & Northern Railroad (GMN) (3)
- Gulf, Mobile & Ohio Railway (GMO) (64)
- Gurdon & Fort Smith Railroad (G&FtS) (1)
- H -- I -- J -- K -- KCS Railroad (1)
- Kanawha & Michigan Railway (K&M) (2)
- Kankakee & Seneca Railroad (K&S) (2)
- Kankakee, Beaverville & Southern Railroad (KBSR) (6)
- Kansas & Missouri Railway & Terminal (K&MR&T) (1)
- Kansas & Oklahoma Railroad (KO) (2)
- Kansas City Belt Railway (2)
- Kansas City Cable Railway (3)
- Kansas City Northwestern Railway (KCNW) (1)
- Kansas City Public Service Co. (KCPS) (5)
- Kansas City Southern Railroad (1)
- Kansas City Southern Railway (KCS) (191)
- Kansas City Southern de México (KCSM) (1)
- Kansas City Suburban Belt Railroad (KCSB) (1)
- Kansas City Terminal Railway (KCT) (18)
- Kansas City, Clay County & St. Joseph Railway (KCCC&StJ) (17)
- Kansas City, Clinton & Springfield Railway (KCC&S) (4)
- Kansas City, Kaw Valley & Western Railway (KV&W; KCKV&W) (2)
- Kansas City, Memphis & Birmingham Railroad (KCM&B) (2)
- Kansas City, Mexico & Orient Railway (KCM&O) (1)
- Kansas City, Pittsburg & Gulf Railroad (KCP&G) (1)
- Kansas City-Kaw Valley Railroad (KCKV) (1)
- Kansas Eastern Railroad (KER) (2)
- Kansas Pacific Railway (KP) (2)
- Kansas, Oklahoma & Gulf Railway (KO&G) (4)
- Kasgro Rail Lines (KRL) (1)
- Kaw River Railroad (KAW) (1)
- Kaydeross Railroad (3)
- Keeseville, AuSable Chasm and Lake Champlain Railroad (1)
- Kennebec & Portland Railroad (K&P) (1)
- Kentucky & Indiana Bridge & Railroad Co. (K&IB&R) (1)
- Kentucky & Indiana Terminal Railroad (K&IT) (6)
- Kentucky & Tennessee Railway (KT) (2)
- Kentucky Railway Museum (KRM) (3)
- Keokuk & Des Moines Railway (K&DM) (15)
- Keokuk & Western Railroad (K&W) (1)
- Keokuk Junction Railway (KJRY) (9)
- Keota - Washington Transportation Company (KWTR) (18)
- Kewash Railroad (KEWH) (1)
- Key System (2)
- Kiamichi Railroad (KRR) (14)
- Kingston Terminal Railroad (KTER) (1)
- Knoxville & Holston River Railroad (KXHR) (4)
- Knoxville, Cumberland Gap & Louisville Railroad (KCG&L) (3)
- Knoxville, LaFollette & Jellico Railroad (KLF&J) (1)
- Kokomo Belt Railroad (1)
- Kokomo Street Railways (1)
- Kokomo, Marion & Western Traction Co. (KM&W) (1)
- Kyle Railroad (KYLE) (4)
- L -- M -- MAX Light Rail (MAX) (4)
- Macomb, Industry & Littleton Railway (MI&L) (1)
- Macon, Dublin & Savannah Railroad (MD&S) (1)
- Madison & Indianapolis Railroad (1)
- Madison Railroad (CMPA) (6)
- Maine Central Railroad (MEC) (94)
- Maine Coast Railroad (MC) (2)
- Maine Eastern Railroad (MERR) (23)
- Maine Northern Railway (MNRY) (3)
- Maine Shoreline Railway (2)
- Malheur Valley Railway (MRR) (1)
- Manchester & North Weare Railroad Company (M&NW) (1)
- Manhattan City & Interurban Railway (MC&I) (1)
- Manistee Light & Traction Co. (ML&T) (1)
- Mare Island Rail Services (MIRS) (1)
- Marietta & Cincinnati Railroad (M&C) (1)
- Marietta, Columbus & Cleveland Railroad (MC&C) (8)
- Marinette, Tomahawk & Western Railway (MT&W) (1)
- Marion Electric Street Railway (1)
- Market Street Railway (1)
- Marquette Rail (MQT) (1)
- Maryland & Delaware Railroad (MDDE) (2)
- Maryland & Pennsylvania Railroad (MPA) (9)
- Maryland Area Regional Commuter (MARC) (3)
- Maryland Midland Railway (MMID) (2)
- Mason City & Clear Lake Railway (MC&CL) (2)
- Mason City & Fort Dodge Railway (MC&FtD) (2)
- Massachusetts Bay Transportation Authority (MBTA) (105)
- Massachusetts Central Railroad (MCER) (2)
- Massachusetts Coastal Railroad (MC) (4)
- Massena Terminal Railroad (MSTR) (3)
- Mauch Chunk Switchback Railway (MCHS&S) (1)
- Maumee & Western Railroad (MAW) (2)
- McCloud River Railroad (MCR) (1)
- Meadowlake Flyer/Kiwanistrain (1)
- Memphis & Charleston Railroad (2)
- Memphis & Little Rock Railroad (M&LR) (1)
- Memphis Suspension Railway (1)
- Memphis, Clarksville & Louisville Railroad (MC&L) (1)
- Memphis, Helena & Louisiana Railway (MH&L) (2)
- Mercer & Somerset Railroad (1)
- Meriden, Waterbury & Connecticut River Railroad (MW&CR) (4)
- Meridian & Bigbee Railroad (MNBR) (2)
- Meridian Southern Railway (MDS) (2)
- Metra (METX) (66)
- Metro Transit (METRO) (4)
- Metro-North Commuter Railroad (MNCW) (99)
- MetroLink (BSDA) (16)
- Metrolink (Southern California) (SCAX) (20)
- Metropolitan Street Railway Co. (Met) (1)
- Metropolitan Transit Authority of Harris County (METRO) (1)
- Metropolitan West Side Elevated Railroad (Met; MWSER) (4)
- Michigan Central Railroad (MC) (14)
- Michigan Limestone & Chemical Co. (MLC) (1)
- Michigan Northern Railway (MGN) (1)
- Michigan Railway Co. (2)
- Michigan United Railway (MUR) (2)
- Mid-Michigan Railroad (MMRR) (4)
- Middle Tennessee & Alabama Railway (MT&A) (1)
- Middlesex & Boston Street Railway (M&B) (1)
- Middletown & Hummelstown Railroad (MIDH) (1)
- Middletown & New Jersey Railroad (MNJ) (1)
- Midland Continental Railway (1)
- Midland Railway (2)
- Midland Valley Railroad (MV) (17)
- Midsouth Railroad (MSRC) (1)
- Midwest Central Railroad (MCRR) (1)
- Milford-Bennington Railroad (MBRX) (3)
- Milwaukee & Wauwatosa Motor Railway (MWMR) (1)
- Milwaukee Light, Heat & Traction Co. (MLH&T) (6)
- Milwaukee Northern Railway (MN) (5)
- Milwaukee, Lake Shore & Western Railway (MLS&W) (4)
- Milwaukee, Menomonee Falls & Western Railroad (MMF&W) (2)
- Milwaukee, Sparta & Northwestern Railway (MS&NW) (22)
- Mineral Range Railroad (MRAX) (1)
- Minneapolis & St. Louis Railway (M&StL; MSTL) (131)
- Minneapolis Eastern Railroad (1)
- Minneapolis Union Railway (1)
- Minneapolis, Northfield & Southern Railway (MN&S) (12)
- Minneapolis, St. Paul and Sault Ste. Marie Railroad (SOO) (2)
- Minneapolis, St. Paul, & Sault Ste. Marie Railroad (SOO) (18)
- Minnesota & International Railway (M&I) (2)
- Minnesota & North Western Railroad (M&NW) (1)
- Minnesota & Ontario Bridge Company Railroad (M&OBC) (1)
- Minnesota Commercial Railway (MNNR) (3)
- Minnesota Northern Railroad (MNN) (5)
- Minnesota Prairie Line (MPLI) (4)
- Minnesota Southern Railway (MSWY) (1)
- Minnesota Transfer Railway (MTFR) (1)
- Minnesota Zephyer Ltd (MZL) (1)
- Minnesota, Dakota & Western Railway (MDW) (1)
- Mississippi Central Railroad (MSCI) (3)
- Mississippi Delta Railroad (MSDR) (1)
- Mississippi Export Railroad (MSE) (1)
- Mississippi Railroad (MS) (1)
- Mississippi Valley Public Service Co. (1)
- Missouri & Arkansas Railway (M&A) (1)
- Missouri & North Arkansas Railway (M&NA) (21)
- Missouri & Northern Arkansas Railroad (MNA) (23)
- Missouri Central Railroad (MOC) (6)
- Missouri Midland Railway (1)
- Missouri Pacific Railroad (MP; MoPac) (248)
- Missouri, Oklahoma & Gulf Railway (MO&G) (2)
- Missouri-Illinois Railroad (M&I) (2)
- Missouri-Kansas-Texas Railroad (MKT) (150)
- Mobile & Ohio Railroad (M&O) (9)
- Modesto & Empire Traction Co. (MET) (1)
- Mohawk, Adirondack, & Northern Railroad (MHWA) (7)
- Mojave Northern Railroad (MNRR) (1)
- Monon Railroad (MON) (22)
- Monongahela Connecting Railroad (MCRR) (2)
- Monongahela Railroad (MGA) (12)
- Monongahela Valley Traction Company (1)
- Monongahela-West Penn Public Service Co. (MWP; MWPPS) (2)
- Monorail (4)
- Montana Central Railroad (MC) (1)
- Montana Rail Link (MRL) (31)
- Montana Western Railway (MWRR) (2)
- Monticello Railway Museum (MRM) (1)
- Montpelier & Barre Railroad (M&B) (10)
- Montpelier & Wells River Railroad (1)
- Montreal, Maine & Atlantic Railway (MMA) (31)
- Morehead & South Fork Railroad (MHSF) (1)
- Morenci Southern Railroad (8)
- Morgan's Louisiana & Texas Railroad & Steamship Co. (ML&T) (2)
- Morris & Essex Railroad (M&E) (1)
- Morris Terminal Railroad (MTR) (1)
- Morristown & Erie Railway (ME) (6)
- Mount Hood Railroad (MH) (1)
- Mount Lowe Railway (2)
- Mount Mansfield Electric Railway (MMER) (2)
- Mount Washington Cog Railway (1)
- Mountain Quarries Railroad (MQC) (1)
- Muscatine & Iowa City Railway (M&IC) (6)
- Muscatine Electric Railway (1)
- Muscatine Light & Traction Co. (ML&T) (1)
- Muscatine North & South Railroad (MN&S) (5)
- Muscatine, Burlington, & Southern Railroad (MB&S) (11)
- Muscle Shoals, Birmingham & Pensacola Railway (MSB&P) (1)
- Muskingum Electric Railroad (MER) (4)
- N -- NASA Railroad (NLAX) (1)
- Napa Valley Railroad (NVRR) (1)
- Napoleon, Defiance & Western Railroad (ND&W) (2)
- Nash County Railroad (1)
- Nashua Street Railway (2)
- Nashua, Acton & Boston Railroad (NA&B) (3)
- Nashville & Chattanooga Railway (N&C) (1)
- Nashville & Eastern Railroad (NERR) (4)
- Nashville, Chattanooga & St. Louis Railway (NC&StL) (19)
- Nassau Electric Railroad (NER) (2)
- Natchez Railway (NTZR) (5)
- National Docks & New Jersey Junction Connecting Railway (ND&NJJCR) (3)
- National Docks Railway (NDRR) (3)
- Naugatuck Railroad (NAUG) (21)
- Nebkota Railway (NRI) (3)
- Nebraska Central Railroad (NCRC) (3)
- Nevada Northern Railway (NN) (1)
- New Albany & Louisville Electric Railway (NA&L) (2)
- New Castle & Richmond Railroad (NC&R) (4)
- New Castle Industrial Railroad (NCIR) (3)
- New England Central Railroad (NECR) (63)
- New England Southern Railroad (NEGS) (23)
- New Hampshire & Vermont Railroad (NHVT) (5)
- New Hampshire Central Railroad (NHCR) (2)
- New Hampshire Northcoast Railroad (NHN) (2)
- New Haven & Derby Railroad (1)
- New Haven & Northampton Railroad (NH&N) (32)
- New Haven, Middletown & Willimantic Railroad (NHM&W) (18)
- New Hope & Ivyland Railroad (NHRR) (4)
- New Hope Valley Railway (2)
- New Jersey & Hudson River Railway & Ferry Company (NJ&HR) (1)
- New Jersey Midland Railroad (1)
- New Jersey Transit (NJT) (97)
- New Mexico & Arizona Railroad (NM&A) (1)
- New Mexico Rail Runner Express (NMRX) (3)
- New Orleans & Carrollton Railroad (NO&C) (2)
- New Orleans & Gulf Coast Railway (1)
- New Orleans Public Belt Railroad (NOPB) (2)
- New Orleans Public Service Incorporated (NOPSI) (3)
- New York & Erie Railroad (NY&E) (2)
- New York & Greenwood Lake Railroad (1996) (NYGL) (1)
- New York & Greenwood Lake Railway (1878-1943) (NYGL) (18)
- New York & Lake Erie Railroad (NYLE) (3)
- New York & Long Beach Railroad (NY&LB) (1)
- New York & Long Branch Railroad (NYLB) (8)
- New York & Manhattan Beach Railway (NY&MB) (1)
- New York & New England Railroad (NYNE) (34)
- New York & New Haven Railroad (NY&NH) (5)
- New York & Ogdensburg Railway (NYOG) (1)
- New York & Putnam Railroad (NY&P) (8)
- New York Central & Hudson River Railroad (NYC&HR) (5)
- New York Central Railroad (NYC) (404)
- New York City Metropolitan Transit Authority (MTA) (110)
- New York City Transit Authority (NYCTA) (23)
- New York Connecting Railroad (NYCN) (5)
- New York Rapid Transit Corporation (NYRT) (3)
- New York State Railways (4)
- New York, Chicago, & St. Louis Railroad (NKP) (66)
- New York, Lake Erie & Western Railroad (NYLE&W) (3)
- New York, New Haven & Hartford Railroad (NH) (415)
- New York, Ontario, & Western Railway (OW) (18)
- New York, Philadelphia & Norfolk Railroad (NYP&N) (1)
- New York, Providence & Boston Railroad (NYP&B) (7)
- New York, Susquehanna, & Western Railway (NYSW) (24)
- New York, West Shore & Buffalo Railroad (NYWS&B) (27)
- New York, Westchester & Boston Railroad (NYWB) (2)
- Newark & Marion Railway (N&M) (2)
- Newburg & South Shore Railroad (NSR) (1)
- Newburgh, Dutchess, & Connecticut Railroad (ND&C) (4)
- Newport News Shipbuilding & Drydock Co. (NNS&DD) (1)
- Newton & Boston Street Railway (N&B) (1)
- Newton & Northwestern Railroad (N&NW) (2)
- Newtown, Langhorne & Bristol Street Railway Co. (NL&B) (1)
- Nicholas, Fayette & Greenbrier Railway (NF&G) (3)
- Niles Canyon Railway (NCRy) (6)
- Nittany & Bald Eagle Railroad (NBER) (2)
- Nobles Rock Railroad (NRR) (1)
- Norfolk & Portsmouth Belt Line Railroad (NPB) (1)
- Norfolk & Western Railway (N&W) (296)
- Norfolk County Railroad (7)
- Norfolk Southern Railway (NS) (1,398)
- Norfolk Southern Railway (1942-82) (NS) (3)
- North Carolina & Virginia Railroad (NCVA) (1)
- North Carolina Railroad (1849-1871) (1)
- North Carolina Railroad Co. (NCRR) (39)
- North Central Oklahoma Railway (NCOK) (2)
- North Central Railway Authority (NCRA) (1)
- North Coast Railroad (1)
- North Jersey Rapid Transit (NJRT) (5)
- North Missouri Railroad (1)
- North Pacific Coast Railroad (NPC) (1)
- North Pennsylvania Railroad (NPA) (1)
- North Shore Railroad (NSHR) (1)
- North Shore Railroad (California) (1)
- North Shore Scenic Railroad (NSSR) (10)
- North Stratford Railroad (NSRC) (1)
- Northeast Corridor (NEC) (150)
- Northern Central Railroad (1)
- Northern Central Railway (NCRY) (8)
- Northern Electric Railway (NE) (6)
- Northern Indiana Commuter Transportation District (NICTD) (6)
- Northern Indiana Power Co. (NIPC) (1)
- Northern Indiana Railway (NIR) (5)
- Northern Ohio Traction & Light Co. (NOT&L) (1)
- Northern Pacific Railroad (NP) (219)
- Northern Texas Traction Co. (NTT) (6)
- Northstar Commuter Railroad (MNRX) (1)
- Northwest Railway Museum (NRM) (2)
- Northwestern Pacific Railroad (NWP) (32)
- Norwich & Westerly Railway (3)
- Norwich & Worcester Railroad (7)
- O -- P -- PATCO Speedline (PATCO) (1)
- Pacific Coast Railway (PCR) (3)
- Pacific Electric Railway (PE) (58)
- Pacific Harbor Line (PHL) (2)
- Pacific Imperial Railroad (PIR) (1)
- Pacific Northwest Traction Co. (PWNTC) (4)
- Pacific Short Line (1)
- Paducah & Illinois Railroad (P&I) (1)
- Paducah & Louisville Railway (PAL) (18)
- Palouse River & Coulee City Railroad (PCC) (5)
- Pan Am Railways (PAR) (132)
- Panhandle & Santa Fe Railway (P&SF) (3)
- Paris & Danville Railroad (P&D) (1)
- Pend Oreille Valley Railroad (POVA) (6)
- Penn Central Railroad (PC) (528)
- Penndel Co. (3)
- Pennsylvania & New Jersey Traction Co. (P&NJ) (1)
- Pennsylvania & Sodus Bay Railroad (P&SB) (1)
- Pennsylvania Railroad (PRR) (515)
- Pennsylvania Tunnel & Terminal Railroad (PT&T) (1)
- Pennsylvania Union Railroad (URR) (12)
- Pennsylvania, New Jersey & New York Railroad (PNJ&NY) (1)
- Pennsylvania, New York & Long Island Railroad (PNY&LI) (1)
- Pennsylvania-Reading Seashore Lines (PRSL) (16)
- Peoria & Eastern Railroad (P&E) (14)
- Peoria & Pekin Terminal Railway (P&PT) (2)
- Peoria & Pekin Union Railway (PPU) (6)
- Peoria & Rock Island Railway (P&RI) (1)
- Peoria & Western Railway (PWRY) (6)
- Peoria City Railway (PCRy) (1)
- Peoria Railway Terminal Company (PRTC) (2)
- Peoria Terminal Co. (PTC) (2)
- Peoria, Peoria Heights & Western Railroad (PPHW) (1)
- Pere Marquette Railroad (PM) (23)
- Philadelphia & Columbia Railroad (P&CRR) (3)
- Philadelphia & Reading Railroad (P&R) (7)
- Philadelphia & Trenton Railroad (PT) (1)
- Philadelphia & Western Railway (P&W) (1)
- Philadelphia Suburban Transportation Co. (PST) (1)
- Philadelphia, Baltimore & Washington Railroad (PBW) (4)
- Philadelphia, Wilmington & Baltimore Railroad (PWB) (4)
- Phoenix & Eastern Railroad (P&E) (5)
- Pickens Railway (PKHP) (1)
- Piedmont & Cumberland Railway (P&C) (1)
- Piedmont & Northern Railway (1911-1969) (PN) (2)
- Piedmont & Northern Railway (2003) (PNRW) (4)
- Pine Bluff North & South Railroad (PBN&S) (1)
- Pioneer Valley Railroad (PVRR) (12)
- Pittsburg & Shawmut Railroad (PSR) (10)
- Pittsburg, Shawmut & Northern Railroad (PSN) (6)
- Pittsburgh & Butler Street Railway (P&B) (1)
- Pittsburgh & Castle Shannon Railroad (P&CS) (4)
- Pittsburgh & Lake Erie Railroad (PLE) (8)
- Pittsburgh & Ohio Central Railroad (POHC) (2)
- Pittsburgh & Steubenville Railroad (P&S) (2)
- Pittsburgh & West Virginia Railway (P&WV) (29)
- Pittsburgh & Western Railroad (4)
- Pittsburgh Industrial Railroad (PIR) (6)
- Pittsburgh Light Rail (T) (2)
- Pittsburgh Railways (PRCo) (9)
- Pittsburgh, Chartiers & Youghiogheny Railroad (PC&Y) (2)
- Pittsburgh, Cincinnati, Chicago, & St. Louis Railroad (PCC&StL) (49)
- Pittsburgh, Fort Wayne & Chicago Railway (PFtWC) (6)
- Pittsburgh, Harmony, Butler, & New Castle Railway (PHB&NC) (8)
- Pittsburgh, Mars & Butler Railway (PM&B) (1)
- Pittsburgh, Toledo & Western Railroad (PT&W) (3)
- Pittsburgh, Westmoreland & Somerset Railroad (PW&S) (1)
- Pittsburgh, Youngstown & Ashtabula Railroad (PY&A) (3)
- Pittsfield Electric Street Railway (PESR) (1)
- Placerville & Sacramento Valley Railroad (P&SV) (3)
- Pleasant Hill & DeSoto Railroad Co. (PH&D) (2)
- Plymouth & Lincoln Railroad (PLRR) (12)
- Ponce & Guayama Railroad (P&G) (1)
- Port Authority Trans-Hudson (PATH) (6)
- Port Authority of Allegheny County (PAT) (4)
- Port Royal Railroad (PRYL) (1)
- Port Terminal Railroad Association (PTRA) (6)
- Port of Tillamook Bay Railroad (POTB) (5)
- Portland & Ogdensburg Railroad (P&O) (36)
- Portland & Southwestern Railroad (1)
- Portland & Western Railroad (PNWR) (15)
- Portland Electric Power Co. (PEPCO) (5)
- Portland General Electric (PGE) (1)
- Portland Railroad & Terminal Division of the Portland Traction Co. (PR&T) (1)
- Portland Railway, Light & Power Co. (PRL&P) (7)
- Portland Streetcar (2)
- Portland Terminal Company (PTM) (1)
- Portland Traction Co. (PTC) (2)
- Portland, Astoria, & Pacific Railroad (PA&P) (3)
- Portland, Vancouver & Yakima Railroad (PV&Y) (1)
- Portland-Lewiston Interurban (PLI) (6)
- Porto Rico Railway, Light & Power Co. (PRRL&P) (2)
- Portsmouth Street Railway & Light Co. (1)
- Portsmouth, Dover & York Street Railway (3)
- Portsmouth, Kittery & York Street Railway (PK&Y) (2)
- Powell's Valley Railroad (PV) (2)
- Progressive Rail Inc (PGR) (8)
- Providence & Worcester Railroad (PW) (53)
- Providence, Warren & Bristol Railroad (PW&B) (1)
- Public Service Coordinated Transport (PSTC) (2)
- Public Service Corporation of New Jersey (PCNJ) (8)
- Public Utilities Co. (PUC) (1)
- Puget Sound & Pacific Railroad (PSAP) (8)
- Puget Sound Electric Railway (PSE) (3)
- Q -- R -- R.J. Corman Railroad (RJCN; RJCR; RJCC; RJCL; RJCM; RJCP; RJCK; RJNX; RJCV) (17)
- Rail-to-road (278)
- Rail-to-trail (1,293)
- Railroad Museum of New England (NAUG; RMNE) (4)
- Railroad Switching Service of Missouri (RSM) (1)
- Railway (1)
- Rainier Power & Railway Co. (RP&R) (1)
- Raleigh & Gaston Railroad (3)
- Ramsey County Regional Railroad Authority (RCRRA) (1)
- Rapid City, Pierre & Eastern Railroad (RCP&E) (31)
- Rapid Railway System (1)
- Rapid Transit (100)
- Raritan River Railroad (RRRR) (1)
- Rarus Railway (RARW) (2)
- Reading Railroad (RDG) (103)
- Reading. Blue Mountain & Northern Railroad (RBMN) (8)
- Red River Valley & Western Railroad (1)
- Red River, Texas, & Southern Railway (RRT&S) (1)
- Redmont Railroad (RRC) (2)
- Regional Transportation District (Denver) (RTD) (1)
- Rensselaer & Saratoga Railroad (R&S) (2)
- Rhode Island Central Railroad (1)
- Richmond & Alleghany Railroad Co. (RA) (2)
- Richmond & Chesapeake Bay Railway (R&CB) (1)
- Richmond & Manchester Railway (3)
- Richmond, Fredericksburg & Potomac Railroad (RFP) (3)
- Richmond, Nicholasville, Irvine & Beattyville Railroad (RNI&B) (1)
- Richmond-Henrico Railway (3)
- Rio Grande Southern Railroad (RGS) (14)
- River Terminal Railway (RT) (1)
- Riverview Street Railway Co. (1)
- Roaring Camp & Big Trees Narrow Gauge Railroad (RC&BT) (1)
- Rochester & Eastern Rapid Railway (R&E) (2)
- Rochester & Genesee Valley Railroad (R&GV) (1)
- Rochester & Southern Railroad (RSR) (5)
- Rochester & Syracuse Railroad (R&S) (2)
- Rochester Industrial & Rapid Transit Railway (RSB) (4)
- Rochester, Lockport, & Buffalo Railroad (RLB) (1)
- Rochester, Syracuse & Eastern Rapid Railroad (RS&E) (2)
- Rock & Rail LLC (1)
- Rock Creek Railway (1)
- Rock Island Southern Railway (RIS) (8)
- Rockford & Freeport Interurban Railway (R&F) (1)
- Rockford & Interurban Railway (R&I) (3)
- Rockford Public Service Co. (2)
- Rocky Mount & Western Railroad (1)
- Rome, Watertown & Ogdensburg Railroad (RW&O) (11)
- Royal Gorge Route Railroad (CRRX) (1)
- Rutland Railroad (RUT) (37)
- S -- Sacramento Northern Railway (SN) (32)
- Sacramento Regional Transit District (SRT) (1)
- Sacramento Southern Railroad (SS) (2)
- Saginaw Valley Traction Co. (1)
- Saginaw-Bay City Railroad (S&BC) (2)
- Saginaw-Bay City Railway (1)
- Saint Louis, Fort Scott and Wichita Railroad (4)
- Salem, Falls City & Western Railroad (SFC&W) (1)
- San Antonio & Aransas Pass Railway (SA&AP) (4)
- San Antonio Zoo Railroad (SAZ) (1)
- San Antonio, Uvalde & Gulf Railroad (SAU&G) (1)
- San Diego & Arizona Eastern Railway (SDAE) (2)
- San Diego & Arizona Railway (SD&A) (1)
- San Diego & Imperial Valley Railroad (SDIV; SDIY) (1)
- San Diego Metropolitan Transit System (MTSD) (1)
- San Francisco & Napa Valley Railroad (SF&NV) (1)
- San Francisco & Northern Pacific Railroad (SF&NP) (1)
- San Francisco Bay Railroad (SFB) (1)
- San Francisco Municipal Railway (MUNI) (5)
- San Francisco, Napa & Calistoga Railway (SFN&C) (1)
- San Joaquin & Sierra Nevada Railroad (SJ&SN) (2)
- San Joaquin Valley Railroad (SJVR) (1)
- San Luis & Rio Grande Scenic Railroad (SLRG) (2)
- Sandusky River Railroad (SYRR) (2)
- Sandusky, Norwalk, & Mansfield Railway (SN&M) (1)
- Santa Cruz & Monterey Bay Railway (SC&MB) (8)
- Santa Cruz, Big Trees & Pacific Railway (SCBG) (5)
- Santa Fe & Disneyland Railroad (SF&DLRR) (2)
- Santa Fe, Prescott & Phoenix Railway (SFP&P) (5)
- Saratoga & North Creek Railway (SNC) (8)
- Saratoga Whitehall Railroad (1)
- Schenectady & Saratoga Railroad (S&S) (1)
- Schenectady Railway Co. (SRC) (8)
- Schuylkill & Susquehanna Railroad (SSUQ) (1)
- Scioto Valley Traction Co. (SVT) (1)
- Seaboard & Roanoke Railroad (1)
- Seaboard Air Line Railway (SAL) (63)
- Seaboard Coast Line Railroad (SCL) (124)
- Seaboard System Railroad (SBD) (94)
- Seattle & North Coast Railway (SNCT) (1)
- Seattle Electric Co. (SECo) (3)
- Seattle, Lake Shore & Eastern Railroad (SLS&E) (2)
- Seattle, Port Angeles & Western Railway (SPA&W) (1)
- Sedalia, Warsaw & Southwestern Railroad (SW&SW) (2)
- Seminole Gulf Railway (SGLR) (2)
- Semo Port Railroad (SE) (1)
- Sequatchie Valley Railroad (1867) (3)
- Sequatchie Valley Railroad (1986) (SQVR) (2)
- Shaker Heights Rapid Transit (SHRT) (3)
- Shawnee Terminal Railway (STR) (2)
- Sheboygan Light, Power & Railway Co. (SLP&R) (1)
- Sheffield Company (1)
- Sheffield Street Railway (1)
- Shelburne Falls & Colrain Street Railway (SF&C) (1)
- Shelbyville & Columbus Railroad (1)
- Shelton Street Railway (1)
- Shepaug, Litchfield & Northern Railroad (SLN) (2)
- Shore Line East (SLE) (7)
- Shore Line Electric Railway (SLERy) (4)
- Sierra Northern Railway (SERA) (4)
- Sierra Railway (1)
- Simpson Railroad (STC) (3)
- Sioux City Elevated Railway (1)
- Sioux City Service Co. (SCS) (2)
- Sioux City Traction Co. (1)
- Skagit River Railway (SRRY) (3)
- Somerset Railroad (4)
- Sonoma-Marin Area Rail Transit (SMART) (5)
- Soo Line Railroad (SOO) (261)
- Sounder Commuter Rail (SDRX) (4)
- South & Western Railway (S&W) (18)
- South Bend & Southern Michigan Railway (SB&SM) (4)
- South Buffalo Railroad (SB) (1)
- South Carolina Central Railroad (SCRF) (5)
- South Central Florida Express (SCXF) (2)
- South Central Florida Railroad (SCFE) (2)
- South Central Tennessee Railroad (SCTR) (1)
- South Kansas & Oklahoma Railroad (SKOL) (20)
- South Mountain Railroad (1)
- South Pacific Coast Railroad (SPC) (2)
- South Pennsylvania Railroad (8)
- South Side Elevated Railroad (1)
- South Side Railway (1)
- South St. Paul Belt Railway (SStPB) (1)
- Southeast Ohio Railway & Light Co. (SEOR&L) (1)
- Southeastern Ohio Railway (SEO) (1)
- Southeastern Pennsylvania Transportation Authority (SEPTA) (41)
- Southeastern Power & Light Co. (1)
- Southern Appalachia Railway Museum (SARX) (1)
- Southern Cambria Railway (SCR) (1)
- Southern Indiana Gas & Electric Co. (SIG&E) (1)
- Southern Indiana Railroad (SIND) (4)
- Southern Iowa Railway (SIRy) (4)
- Southern Iowa Traction (1)
- Southern Michigan Railroad Society (SMRS) (1)
- Southern Pacific Railroad (SP) (488)
- Southern Pennsylvania Iron & Railway Co. (SPI&R) (3)
- Southern Pennsylvania Railway & Mining Co. (SPR&M) (3)
- Southern Railroad of New Jersey (SRNJ) (1)
- Southern Railway (SOU) (205)
- Southern Traction Co. (3)
- Southside Railroad (5)
- Southwest Missouri Electric Railway (SWM) (7)
- Southwest Pennsylvania Railroad (SWP) (3)
- Southwestern Portland Cement Railroad (SWPC) (1)
- Southwestern Railroad (SW) (1)
- Spartanburg Railway, Gas & Electric Co. (SRG&E) (1)
- Spokane & Inland Empire Railroad (S&IE) (4)
- Spokane International Railroad (SI) (5)
- Spokane, Portland & Seattle Railway (SPS) (51)
- Springfield & Northwestern Railway (4)
- Springfield Terminal Railway (ST) (143)
- Springfield, Delaware, & Mt. Vernon Railroad (SD&MtV) (1)
- Springfield, Troy, & Piqua Railway (ST&P) (1)
- St. Charles Air Line Railroad (1)
- St. Cloud Streetcar Co. (1)
- St. Croix Valley Railroad (SKCY) (2)
- St. Johnsbury & Lamoille County Railroad (StJ&LC) (26)
- St. Joseph & Savannah Interurban Railway (StJ&S) (1)
- St. Joseph Valley Railway (StJV) (2)
- St. Joseph Valley Traction Co. (StJV) (2)
- St. Joseph, South Bend & Southern Railroad (SJSB&S) (2)
- St. Lawrence & Atlantic Railroad (SLR) (11)
- St. Louis & Alton Railway (StL&A) (1)
- St. Louis & Alton Railway Co. (StL&A) (1)
- St. Louis & Hannibal Railroad (StL&H) (5)
- St. Louis & Iron Mountain Railway (1869-1874) (StL&IM) (1)
- St. Louis & Meramec River Railroad (StL&MR) (1)
- St. Louis & Suburban Railway (StL&S) (1)
- St. Louis Public Service Co. (PSCO) (9)
- St. Louis Southwestern Railway (SSW) (58)
- St. Louis Water Works Railroad (StLWW) (1)
- St. Louis, Brownsville, & Mexico Railway (StLB&M, SLBM, SBM) (4)
- St. Louis, Des Moines, & Northern Railway (StLDM&N) (1)
- St. Louis, Iron Mountain & Southern Railway (StLIM&S) (27)
- St. Louis, Kansas City & Colorado Railway (StLKC&C) (6)
- St. Louis, Keokuk & Northwestern Railroad (StLK&NW) (3)
- St. Louis, Lawrence & Denver Railroad Co. (StLL&D) (2)
- St. Louis, Lawrence & Western Railroad Co. (StLL&W) (2)
- St. Louis, Peoria & North Western Railway (StLP&NW) (6)
- St. Louis, St. Charles & Western Railway (StLStC&W) (1)
- St. Louis-San Francisco Railway (SLSF; Frisco) (186)
- St. Maries River Railroad (STMA) (10)
- St. Paul & Duluth Railroad (StP&D) (1)
- St. Paul & Kansas City Short Line Railroad (StP&KCSL) (5)
- St. Paul City Railway (1)
- St. Paul Southern Electric Railway (1)
- St. Paul, Minneapolis & Manitoba Railway (StPM&M) (11)
- State Belt Railroad (1)
- State University Railroad (SUR) (3)
- Staten Island Rapid Transit (SIR) (14)
- Stearns Coal & Lumber Co. (1)
- Steelton & Highspire Railroad (SH) (2)
- Sterling, Dixon, & Eastern Railway (SD&E) (2)
- Steubenville, East Liverpool & Beaver Valley Traction Co. (SEL&BVT) (2)
- Stewartstown Railroad (3)
- Stillwater Central Railroad (SLWC) (7)
- Streamor & Clinton Railway (S&C) (1)
- Streetcar (210)
- Subway (19)
- Suffolk & Carolina Railway (S&C) (2)
- Sullivan Railroad (2)
- Sunbury & Lewistown Railroad (S&L) (1)
- Sunbury & Selinsgrove Electric Railway (S&SER) (2)
- Syracuse & Baldwinsville Railroad (S&B) (1)
- Syracuse, Geneva, & Corning Railroad (SG&C) (1)
- Syracuse, Lake Shore & Northern Railroad (SLS&N) (1)
- Syracuse, Lakeside & Baldwinsville Railway (SL&B) (1)
- T -- TN & OH Railroad (1)
- Tacoma Eastern Railroad (TE) (1)
- Tacoma Rail (TMRW) (6)
- Tacoma Railway & Power Co. (TR&P) (2)
- Tallassee & Montgomery Railway (T&M) (1)
- Tallulah Falls Railway (TF) (1)
- Tampa & Gulf Coast Railroad (T&GC) (1)
- Tampa & Sulphur Springs Traction Co. (T&SSTC) (1)
- Tampa Electric Co. (TECO) (4)
- Tampa Southern Railroad (TAS) (3)
- Tarrant County Traction Co. (TCT) (1)
- Tazewell & Peoria Railroad (TZPR) (2)
- Tennessee Central Railway (TC) (22)
- Tennessee Coal, Iron & Railroad Co. (TCI) (13)
- Tennessee Southern Railroad (TSRR) (6)
- Tennessee Valley Railroad Museum (TVRM) (1)
- Tennessee, Alabama & Georgia Railway (TAG) (2)
- Tennken Railroad (TKEN) (1)
- Terminal Railroad Association of St. Louis (TRRA) (22)
- Terminal Railway Alabama State Docks (TASD) (1)
- Terre Haute & Indianapolis Railroad (TH&I) (2)
- Terre Haute & Peoria Railroad (TH&P) (1)
- Terre Haute & Southwestern Railroad (1)
- Terre Haute, Brazil & Eastern Railroad (TBER) (1)
- Terre Haute, Indianapolis, & Eastern Traction Co. (THI&E) (12)
- Texarkana & Ft. Smith Railway (T&FS) (1)
- Texas & New Orleans Railroad (TNO; T&NO) (33)
- Texas & Northern Railway (TN) (2)
- Texas & Pacific Railway (T&P) (32)
- Texas Central Railroad (TC) (3)
- Texas Electric Railway (TER) (13)
- Texas Interurban Railway (1)
- Texas Mexican Railway (TM) (2)
- Texas Pacifico Transportation (TXPF) (5)
- Texas Traction Co. (TTC) (3)
- Texas Transportation Co. (TXTC) (2)
- Texas Utilities Railroad (TXU) (2)
- The Milwaukee Electric Railway & Light Co. (TMER&L; TM) (19)
- Tidewater Railway (1)
- Tidewater Southern Railway (TS) (3)
- Timber Rock Railroad (TIBR) (3)
- Toledo & Chicago Interurban Railway (T&CI) (2)
- Toledo & Ohio Central Railway (T&OC) (2)
- Toledo & Western Railroad (T&W) (2)
- Toledo Bowling Green & Southern Traction Co. (TBG&S) (1)
- Toledo Terminal Railroad (TT) (2)
- Toledo, Lake Erie & Western Railway (TLE&W) (1)
- Toledo, Norwalk & Cleveland Railroad (TN&C) (3)
- Toledo, Ottawa Beach & Northern Railway (TOB&N) (1)
- Toledo, Peoria, & Western Railroad (TPW) (26)
- Toledo, Port Clinton, & Lakeside Railway (TPC&L) (4)
- Toledo, St. Louis & Western Railroad (TStL&W) (8)
- Tomahawk Railway (TR) (1)
- Tonawanda Island Railroad (TIRL) (1)
- Transkentucky Transportation Railroad (TTIS) (1)
- Trapp Mountain Railroad (1)
- Trevorton, Mahanoy & Susquehanna Railroad (TM&S) (1)
- Tri-City & Olympia Railroad (TCRY) (1)
- Tri-City Railway & Light Co. (TCR&L) (8)
- Tri-Rail (TRCX) (3)
- Trinidad Railway (TRIN) (2)
- Trinity Railway Express (TRE) (3)
- Troy & Greenfield Railroad (T&G) (1)
- Troy & Schenectady Railroad (T&S) (6)
- Tulsa-Sapulpa Union Railway (TSU) (1)
- Tuscola & Saginaw Bay Railway (TSBY) (1)
- Tweetsie (1)
- Twin Cities Western Railroad (TCWR) (31)
- Twin City Rapid Transit Co. (TCRT; TCL) (24)
- Twin State Railroad (TSRD) (5)
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