Abbreviations - railroad names of North America

Like the builder names, the railroad company names are also abbreviated. In most cases, I used the railroad's most common abbreviation, but there are many that might not be obvious.

  • A&B = Amherst & Belchertown
  • A&BR = Arcadia & Betsey River RR
  • A&BV = Anderson & Bella Vista
  • A&G = Atlantic & Gulf
  • A&GW = Atlantic & Great Western RR
  • A&LG = Atlanta & LaGrange
  • A&N = Albany & Northern
  • A&NM = Arizona & New Mexico RR
  • A&NW = Austin & Northwestern RR (3' narrow gauge), under H&TC control ~1888
  • A&P = Atlantic & Pacific RR
  • A&S = Albany & Susquehanna RR (6' broad gauge)
  • A&Sc = Albany & Schenectady RR
  • A&SL = Atlanta & St. Lawrence RR
  • A&StL = Atlantic & St. Lawrence Railroad
  • A&Sy = Auburn & Syracuse
  • A&WP = Atlanta & West Point
  • AC = Amador Central
  • AC&O = Averill Coal & Oil Co.
  • ACRy = Austin Central Ry.
  • Ad&SL = Adirondack & St. Lawrence RR
  • Adir = Adirondack RR
  • AE = Arizona Eastern RR, bought by SP 12/8/1924
  • AF = American Fork RR
  • AG&Co = A. Gross & Co.
  • AL&H = Alexandria, Loudoun & Hampshire Railroad
  • AMR = Albion Mines Railway
  • AP = Allegheny Portage RR
  • ARy = Albion Railway
  • ASC = American Sugar Co.
  • AT = Ahukini Terminal
  • At&B = Attica & Buffalo Railroad
  • ATSF = Atchison, Topeka & Santa Fe RR
  • B&A = Boston & Albany Railroad
  • B&B = Bodie & Benton Ry
  • B&BR = Billerica & Bedford Railroad
  • B&C = Buffalo & Corning RR
  • B&D = Baltimore & Delta Railway (3' narrow gauge)
  • B&E = Buffalo & Erie
  • B&JC = Brooklyn & Jamaica Central
  • B&L = Burlington & Lamoille RR
  • B&M = Boston & Maine RR
  • B&NF = Buffalo & Niagara Falls
  • B&O = Baltimore & Ohio
  • B&P = Bangor & Piscataquis
  • B&R = Bennington & Rutland Ry.
  • B&S = Baltimore & Susquehanna RR
  • B&SL = Buffalo & State Line
  • B&W = Brattleboro & Whitehall (3' narrow gauge)
  • BBB&C = Buffalo Bayou, Brazos & Colorado RR, bought by SP
  • BC&F = Boston Coal & Fuel
  • BC&M = Boston, Concord & Montreal RR
  • BCCRC = Beaver Creek & Cumberland River Coal Co.
  • BClF = Boston, Clinton & Fitchburg RR
  • BF&B = Bradford & Foster Brook Ry (monorail)
  • BH&E = Boston, Hartford & Erie RR
  • BL&N = Boston, Lowell & Nashua
  • BM = Beaver Meadows
  • BM&L = Battle Mountain & Lewis Ry.
  • Bo&L = Boston & Lowell
  • Bo&P = Boston & Providence
  • Bo&W = Boston & Worcester
  • BR&A = Blue Ridge & Atlantic
  • BRR = Barre RR, Vermont
  • Bu&R = Buffalo & Rochester Railroad
  • C&A = Camden & Amboy
  • C&At = Camden & Atlantic
  • C&C = Carson & Colorado
  • C&H = Charleston & Hamburg RR
  • C&M = Concord & Montreal
  • C&NF = Canandaigua & Niagara Falls Railroad. 6 ft gauge. Founded in 1853; acquired by the New York Central Railroad in 1858.
  • C&NW = Chicago & North Western Railway
  • C&P = Cleveland & Pittsburgh RR
  • C&Pa = Cumberland & Pennsylvania RR
  • C&PR = Connecticut & Passumpsic Rivers RR
  • C&PS = Columbia & Puget Sound (3' narrow gauge)
  • C&RI = Chicago & Rock Island
  • C&SC = Charlotte & South Carolina
  • C&SL = Champlain & St Lawrence RR
  • C&SP = Clifton & Southern Pacific
  • C&Su = Cayuga & Susquehanna
  • C&VC = Cienfuegos & Villa Clara
  • C&W = Canton & Waynesburg RR (56¾" gauge), bought by NKP
  • C&WWV = Cincinnati & White Water Valley RR
  • Ca&O = Carrollton & Oneida RR
  • CalP = California Pacific RR, bought by CP
  • CaN = California Northern RR, renamed Northern California RR 9/1888; bought by CP
  • CanP = Canadian Pacific
  • CaSL = Cavio & St Louis RR (3' narrow gauge)
  • CaV = Cahuenga Valley RR, Los Angeles area
  • CC = California Central RR, bought by CP
  • CC&BH = Covington, Columbus & Black Hills
  • CC&C = Cleveland, Columbus & Cincinnati RR
  • CC&V = Cripple Creek & Victor
  • CCC = Cape Cod Central RR, became Old Colony RR
  • CCCSL = Cleveland, Cincinatti, Chicago & St. Louis RR
  • CCRR = Carroll County RR
  • CF&S = Chagrin Falls & Southern (3' narrow gauge), bought by NKP
  • CGCo = Congress Gold Co.
  • CH&D = Cincinnati, Hamilton & Dayton
  • Ch&P = Chicago & Pacific Railroad
  • Che = Cherokee RR
  • ChRR = Cheshire RR
  • Cien = Cienfuegos Railroad
  • CinN = Cincinnati Northern Ry
  • CM&SP = Chicago, Milwaukee & St. Paul RR, early predecessor to the Milwaukee Road
  • CNGR = Centennial Narrow Gauge Ry
  • CNJ = Central Railroad of New Jersey
  • CO&I = Chateaugay Ore & Iron Co (3' narrow gauge)
  • CofG = Central RR of Georgia
  • COn = Central Ontario
  • ConnR = Connecticut River RR
  • CoRR = Coronado RR (3' and 20" gauges), Arizona Copper Co., Ltd.
  • CoV = Connotton Valley Ry
  • CP = Central Pacific
  • CP&A = Cleveland, Plainsville & Asthabula RR
  • CP&C = Cincinnati, Peru & Chicago Ry
  • CP&I = Columbus, Piqua & Indianapolis Railroad
  • CPIC = Crown Point Iron Co.
  • CR&B = Central Railroad & Banking Company of Georgia
  • CRR = Concord RR
  • CSP&F = Chicago, St. Paul & Fond du Lac RR
  • CST = Central Southern Railroad of Tennessee
  • CStPM&O = Chicago, St. Paul, Minneapolis & Omaha Railway
  • CuV = Cumberland Valley
  • CV = Central Vermont Ry.
  • CV&S = Connotton Valley & Straitsville
  • CW = Connecticut Western
  • D&H = Delaware & Hudson
  • D&HG = Delaware & Hudson Canal Co. Gravity RR.
  • D&K = Delphos & Kokomo Ry (3' narrow gauge)
  • D&Mi = Detroit & Milwaukee
  • D&NO = Denver & New Orleans Railway
  • D&P = Dubuque & Pacific
  • D&RG = Denver & Rio Grande (3' narrow gauge)
  • D&S = Denver & Swansea
  • D&SC = Dubuque & Sioux City
  • D&SE = Dayton & Southeastern RR (3' narrow gauge)
  • DB&F = Delphos, Bluffton & Frankfort RR (3' narrow gauge)
  • DC&T = Dayton, Covington & Toledo RR
  • DCC = Darlington Cannel Coal RR
  • Dis = Disneyland Ry, Anaheim, Ca.
  • DL&W = Delaware, Lackawanna & Western
  • DNW = Davenport & Northwestern Railroad
  • DP = Denver Pacific RR
  • DRR = Dalles RR
  • DS&CV = Dayton, Sutro & Carson Valley Railroad
  • DSW = Dubuque Southwestern Railroad
  • E&KR = Eureka & Klamath River
  • E&NA = European & North American Railway
  • E&P = Eureka & Palisade Ry Co.
  • EBT = East Broad Top RR (3' narrow gauge)
  • EEng = Erie Engineers
  • EMass = Eastern Railroad of Massachusetts
  • EP = East Pennsylvania
  • EPC = Ewa Plantation Co.
  • ER&E = Eel River & Eureka
  • Erie = Erie RR
  • ETH&C = Evansville, Terre Haute & Chicago
  • F&CC = Florence & Cripple Creek Railroad
  • F&CH = Ferries & Cliff House
  • F&K = Frankfort & Kokomo RR
  • F&NS = Flushing & North Side
  • F&W = Fitchburg & Worchester
  • FB = Fort Bragg RR
  • FBCC = Fall Brook Coal Co.
  • FCCH = FC Cordova a Huatusco (2' narrow gauge)
  • FCCM = FC Central Mexicano
  • FCDS = FC De Sonora, Nogales to Guaymas
  • FCHN = FC Hidalgo y Noroeste (3' narrow gauge), bought by NdeM
  • FCM&C = FC Merida & Calkini (3' narrow gauge)
  • FCM&P = FC Merida & Peto
  • FCMS = FC Mexicano De Sur (3' narrow gauge), bought by NdeM
  • FCMYG = FC Monterrey Y Gulfo De Mexico, bought by FCCM
  • FCPM = FC Porvenir de Matehuala (3' narrow gauge)
  • FCTHL = FC Tlacotepec a Huajuapam de Leon (3' narrow gauge)
  • FCUY = FC Unidos de Yucatan (3' narrow gauge)
  • FEC = Florida East Coast RR
  • FLA&P = Fond du Lac, Amboy & Peoria Railroad
  • FP = Freeport RR
  • FR = Fall River RR
  • FRR = Fitchburg Railroad
  • FS = Florida Southern RR
  • FWJ&S = Fort Wayne, Jackson & Saginaw
  • G&A = Golconda & Adelaide RR Co.
  • G&C = Greenville & Columbia
  • G&CU = Galena & Chicago Union
  • G&L = Georgetown & Lane
  • G&RR = Galveston & Red River Ry (66" gauge), bought by H&TC
  • GBM&C = Green Bay, Milwaukee & Chicago
  • GFC = Grove Farm Co.
  • GH&SA = Galveston, Harrisburg & San Antonio RR.
  • GL&LC = Georgia Land & Lumber Co.
  • GMANS = General Mining Association of Nova Scotia
  • GR&BC = Georgia RR & Banking Co.
  • GRR = Georgia Railroad
  • GT = Grand Trunk RR
  • GULC = Glen Union Lumber Co. (3' gauge), Glen Union, Pennsylvania
  • GWP = Great Western Power
  • GWR = Great Western RR of Canada
  • GWRIl = Great Western Railroad of Illinois
  • GWT&P = Gulf, Western Texas & Pacific Railway
  • H&B = Hudson & Berkshire Railroad
  • H&BL = Hilliard & Bailey's Lumber RR
  • H&BTM = Huntington & Broad Top Mountain RR
  • H&C = Hancock & Calumet
  • H&D = Hastings & Dakota Railroad
  • H&NH = Hartford & New Haven
  • H&NY = Hackensack & New York
  • H&P = Hartford & Providence
  • H&S = Hartford & Springfield Railroad
  • H&SJ = Hannibal & St. Joseph Railroad
  • H&TC = Houston & Texas Central RR, bought by SP
  • H&W = Hardwick & Woodbury RR
  • HAC = Hawaiian Agricultural Co.
  • HB = Hanover Branch; became HJH&G in 1874
  • HE&WT = Houston, East & West Texas RR (3' gauge), bought by H&TC
  • HERR = Harlem Extension RR
  • Hilo = Hilo RR Co.
  • HJH&G = Hanover Junction, Hanover & Gettysburg; leased to B&O in 1886
  • HMCo = Homestake Mining Co.
  • HMRy = Hibernia Mine Ry
  • HN&P = Herkimer, Newport & Poland RR
  • Hor = Hornos Railroad (Mexico; 2-ft gauge)
  • Hou = Housatonic RR
  • HPC = Honolulu Plantation Co.
  • HR = Hudson River RR, merged into New York Central in 1869
  • HRC = Hawaiian RR Co.
  • I&A = Ithaca & Athens
  • IaC = Iowa Central
  • IP&C = Indianapolis, Peru & Chicago Ry
  • IR = Illinois River RR.
  • Irolo = Irolo RR (3' gauge), Mexico
  • IRR = Iron Railroad
  • ITx = International Railroad of Texas
  • JNW&SE = Jacksonville Northwestern & Southeastern RR
  • Juc = Jucaro Railway
  • KaRR = Kauai Ry Co.
  • KC = Kennebec Central RR
  • KPC = Kahuku Plantation Co.
  • KPDP = Kansas Pacific - Denver Pacific Ry
  • KRR = Kahului RR Co.
  • KW&H = Kahului, Wailuku & Hamakupoko RR Co., Kahului RR
  • L&B = Lackawanna & Bloomsburg
  • L&D = Lexington & Danville
  • L&E = Louisisana & Eastern
  • L&H = Lordsburg & Hachita
  • L&NF = Lockport & Niagara Falls
  • L&S = Lehigh & Susquehanna
  • L&W = Lackawanna & Western
  • LA&I = Los Angeles & Independence RR
  • LASP = Los Angeles & San Pedro RR
  • LB = Long Beach Land & Water Co, Long Beach RR
  • LB&M = La Fayetter, Bloomington & Mississippi RR
  • LBC = Little Book Cliff Ry (3' gauge)
  • LC&M = La Crosse & Milwaukee Railroad
  • LeC = Legend City RR
  • LF&SH = Laurel Fork & Sand Hill RR
  • LG = Leggetts Gap Railroad
  • LIRR = Long Island Rail Road
  • LK&P = Lahaina, Kaanapali & Pacific
  • LM&B = La Fayette, Muncie & Bloomington RR
  • LMCX = Little Miami & Columbus & Xenia RR
  • LMRR = Little Miami RR
  • LNA&C = Louisville, New Albany & Chicago RR
  • LPC = Lihue Plantation Co. (30" gauge)
  • LS = Little Schuylkill RR
  • LSE = Lake Street Elevated Railroad
  • LSMS = Lake Shore & Michigan Southern
  • LSNR = Little Schuylkill Nav RR & Coal Co.
  • LV = Lehigh Valley
  • LW = Louisiana Western RR, bought by SP
  • M&C = Memphis & Charleston RR
  • M&Ci = Marietta & Cincinnati
  • M&E = Morris & Essex RR
  • M&GL = Montclair & Greenwood Lake
  • M&HR = Mohawk & Hudson River
  • M&I = Madison & Indianapolis
  • M&M = Mississippi & Missouri Railroad
  • M&N = Milwaukee & Northern Railroad
  • M&O = Memphis & Ohio
  • M&Oh = Mobile & Ohio
  • M&P = Maricopa & Phoenix RR, Ex-MP&SR 1/10/1908; to AE 12/1909
  • M&PDC = Milwaukee & Prairie du Chien Ry.
  • M&S = Middleburgh & Schoharie
  • M&Sa = Matanzas & Savanilla Railway
  • M&SC = Mansfield & Sandusky City
  • M&SP = Milwaukee & St Paul, became part of Milwaukee Road
  • M&StL = Minneapolis & St. Louis
  • M&SV = Monterey & Slainas Valley RR (3' gauge), bought by SP
  • M&V = Merida & Valladolid (3' gauge)
  • M&W = Macon & Western
  • M&WR = Montpelier & Wells River RR
  • Ma&Pa = Maryland & Pennsylvania RR
  • Ma&S = Mansfield & Sandusky RR
  • MAC = Maui Agricultural Co.
  • Mach = Machiasport RR
  • MBSC = McBride Sugar Co.
  • MC = Michigan Central RR
  • MC&T = Mississippi Central & Tennessee
  • Mi&W = Milwaukee & Watertown Railroad
  • ML&T = Morgan's Louisiana & Texas Railroad & Steamship Company (bought by SP)
  • MnC = Minnesota Central Railroad
  • Mo&P = Montreal & Plattsburg RR
  • MofC = Midland Ry of Canada
  • Mont = Montgomery Railroad
  • MoRR = Morelos RR (3' gauge), Mexico
  • MP&SR = Maricopa, Phoenix & Salt River Valley RR, became M&P
  • MPt = Mineral Point Railroad
  • MR&LE = Mad River & Lake Erie
  • MRR = Mapimi RR (30" gauge), Mexico
  • MS = Morenci Southern Ry (3' gauge)
  • MT&C = Mexico, Toluca & Cuautitlan RR (3' gauge)
  • Musc = Muscogee Railroad
  • MV = Miami Valley Ry (3' gauge)
  • MV&MT = Mill Valley & Mt. Tamalpais Scenic Ry.
  • MWCR = Mount Washington Cog Ry.
  • N&C = Nashville & Chattanooga
  • N&F = Newcastle & Frenchtown RR
  • N&H = Natchez & Hamburg RR
  • N&L = Nashua & Lowell RR
  • N&PP = Nuevitas & Puerto Principe Railroad
  • NA&S = New Albany & Salem RR
  • Naug = Naugatuck Railroad
  • NB = New Brunswick Ry.
  • NC = Nevada Central RR
  • NC&F = New Castle & Franklin RR
  • NCa = Northern California RR
  • NCe = Northern Central Ry, early predecessor of Pennsylvania RR
  • NCI = Northern Cross Railroad of Illinois
  • NCNG = Nevada County Narrow Gauge RR (3' gauge)
  • NE = North Eastern
  • NEG = Northeast RR of Georgia
  • NESC = North Eastern Railroad of South Carolina
  • NH&N = New Haven & Northampton
  • NH&NL = New Haven & New London
  • NHC = New Hampshire Central RR
  • NHM&W = New Haven, Middletown & Willimantic
  • NI = Northern Illinois Railroad
  • NIRR = Northern Indiana Railroad
  • NJM = New Jersey Midland Railway
  • NJNY = New Jersey & New York RR
  • NJR&T = New Jersey RR & Transportation Co.
  • NKP = Nickel Plate Road
  • NLN = New London Northern, Vermont
  • NLWP = New London, Willimantic & Palmer RR
  • NM&SP = New Mexico & Southern Pacific RR
  • NNH = Northern Railroad of New Hampshire
  • NNY = Northern Railroad of New York
  • No&W = Norwich & Worcester RR
  • NoC = Norfolk County RR
  • NOO&GW = New Orleans, Opelousas & Great Western RR, bought by SP
  • NoS = North Shore RR
  • NP = Northern Pacific Railway
  • NPC = North Pacific Coast (3' gauge)
  • NPRR = North Pennsylvania RR
  • NSC = Nova Scotia Central
  • NSL = Nevada Short Line
  • NV = Napa Valley
  • NWis = Northern Wisconsin Railway
  • NWP = NorthWestern Pacific RR, bought by SP
  • NY&E = New York & Erie Railroad
  • NY&F = New York & Flushing
  • NY&H = New York & Harlem Railroad
  • NY&P = New York & Pennsylvania RR
  • NYC = New York Central RR
  • NYEC = New York Equipment Co.
  • NYHL&PCo = New York Heat, Light & Power Co.
  • NYOW = New York, Ontario & Western
  • NYPB = New York, Providence & Boston RR
  • NYSW = New York, Susquehanna & Western
  • NYT&M = New York, Texas & Mexican RR, bought by SP
  • O&A = Orange & Alexandria
  • O&C = Oregon & California RR, bought by CP
  • O&CV = Olympia & Chealis Valley (3' gauge)
  • O&E = Oaxaca & Ejutla RR (3' gauge)
  • O&LC = Ogdensburgh & Lake Champlain
  • O&M = Ohio & Mississippi Ry (6' gauge)
  • O&S = Oswego & Syracuse
  • O&SW = Omaha & Southwestern
  • O&T = Ohio & Toledo RR
  • OC = Old Colony RR, leased to New Haven RR
  • OCRR = Oil Creek RR
  • OLtd = Oregonian Ry, Ltd. (3' gauge)
  • OPRR = Oregon Portage RR
  • OR&LC = Oahu Railway & Land Co.
  • OR&N = Oregon Railway & Navigation Co.
  • ORR = Ohio Railroad
  • OS&H = Ontario, Simcoe & Huron RR
  • OSC = Oahu Sugar Co.
  • OSNCo = Oregon Steamship & Navigation Co.
  • P&AC = Prescott & Arizona Central Ry., Seligman, Ariz.
  • P&AV = Pueblo & Arkansas Valley
  • P&B = Pioche & Bullionville RR Co.
  • P&C = Philadelphia & Columbia
  • P&G = Pensacola & Georgia
  • P&HR = Paterson & Hudson River RR
  • P&I = Peru & Indianapolis RR
  • P&K = Portland & Kennebec
  • P&NY = Pennsylvania & New York Canal & RR Co.
  • P&O = Portland & Ogdensburg RR
  • P&Oq = Peoria & Oquawka RR
  • P&R = Philadelphia & Reading
  • P&Ra = Paterson & Ramapo
  • P&RC&I = Philadelphia & Reading Coal & Iron Company
  • P&RR = Portsmouth & Roanoke Railroad
  • P&SI = Philadelphia & Sea Isle
  • P&T = Philadelphia & Trenton RR
  • P&W = Providence & Worcester RR
  • Pac = Pacific Railroad
  • PacMo = Pacific RR of Missouri
  • Pan = Panama RR
  • PB = Peach Bottom Ry. (3' gauge), Washington state
  • PBMC = Port Blakely Mill Co., Kamilche, Washington
  • PC&B = Painesville, Conton & Bridgeport RR (3' gauge), became CF&S
  • PCGC&C = Pittsburgh & Connellsville Gas, Coal & Coke Co.
  • Pen = Peninsular Ry
  • PFW&C = Pittsburgh, Fort Wayne & Chicago RR
  • PG&N = hiladelphia, Germantown & Norristown RR
  • Ph&R = Phillips & Rangeley Railroad
  • PiC = Pioneer City RR
  • Po&R = Portland & Rochester RR
  • Po&W = Potsdam & Watertown
  • PoRR = Ponchartrain RR
  • PP = Pennsylvania Pacific Ry.
  • PP&J = Peoria, Pekin & Jacksonville
  • PRR = Pennsylvania RR
  • PRV&SP = Pine River Valley & Stevens Point Railroad
  • PS&P = Portland, Saco & Portsmouth RR
  • PSE = Paragould Southeastern Ry. (3' gauge)
  • Q&TL = Quincy & Torch Lake
  • QMD = Quartermaster Corps, Fort Monroe, Va.
  • QMO&O = Quebec, Montreal, Ottawa & Occidental Ry
  • R&B = Rutland & Burlington
  • R&C = Read & Campbell RR, Patzcuaro, Mexico
  • R&G = Raleigh & Gaston
  • R&M = Racine & Mississippi
  • R&S = Rensselaer & Saratoga RR
  • R&Sh = Rushville & Shelbyville
  • R&Sy = Rochester & Syracuse
  • RB = Rockville Branch
  • RC&BT = Roaring Camp & Big Trees Railroad
  • RF&P = Richmond, Fredericksburg & Potomac Railroad
  • RGS = Rio Grande Southern (3' gauge)
  • RGSW = Rio Grande Southwestern
  • RGW = Rio Grande Western (3' gauge)
  • RH = Ruby Hill RR Co.
  • RL&NF = Rochester, Lockport & Niagara Falls
  • RR = Rocky River RR
  • Rut = Rutland RR.
  • RV = Redwood Valley Railway
  • S&C = Stockton & Copperopolis RR, bought by SP
  • S&ET = Sabine & East Texas Ry, bought by SP
  • S&HV = Scioto & Hocking Valley
  • S&I = Stockton & Ione (3' gauge)
  • S&In = Steubenville & Indiana
  • S&J = Sacramento & Jackson Ry
  • S&M = Sangamon & Morgan
  • S&ML = Saginaw & Manistee Lumber Co.
  • S&NW = Springfield & Northwestern RR
  • S&O = Sharpsville & Oakland RR
  • S&S = Saratoga & Schenectady
  • S&T = Schenectady & Troy
  • S&U = Syracuse & Utica RR
  • S&W = Saratoga & Washington
  • S&WW = Seattle & Walla Walla RR (3' gauge)
  • SA&AP = San Antonio & Aransas Pass RR Co, bought by SP
  • SB&R = San Bernardino & Redlands RR, bought by SP
  • SC = South Carolina Rail Road
  • SC&D = Sioux City & Dakota Railroad
  • SC&P = St. Croix & Penobscott Railroad
  • SC&StP = Sioux City & St. Paul
  • SC&TC = Seattle Coal & Transportation Co (3' gauge)
  • SCC = Seattle Coal Co. (3' gauge)
  • SCC&R = South Carolina Canal & RR
  • SCDP = SCDP
  • SCMR = Southern California Moto Road Co., bought by SP
  • SCNY = Southern Central Railroad (New York)
  • SCRC = Santa Cruz RR Co. (3' gauge), bought by SP
  • SCRR = Summit County RR
  • SCV = Santa Clara Valley RR
  • SERR = Southeastern RR
  • SF&A = San Francisco & Alameda RR, bought by CP
  • SF&NP = San Francisco & North Pacific
  • SF&O = San Francisco & Oakland Ry, bought by CP
  • SF&SJ = San Francisco & San Jose RR, bought by SP
  • SFN = Santa Fe Northern
  • SFS = Santa Fe Southern
  • SGT = Six Gun Territory
  • ShL = Shasta Lumber Co.
  • Silv = Silverton RR
  • SJ&LC = St. Johnsbury & Lake Champlain
  • SJ&SN = San Joaquin & Sierra Nevada RR (3' gauge), bought by SP
  • SL = Shaver Lake RR
  • SL&A = St. Lawrence & Adirondack RR
  • SL&IM = St Louis & Iron Mountain RR (5' gauge)
  • SLCo = Simpson Logging Co., Shelton, Washington
  • SLSF = St. Louis & San Francisco RR, Frisco RR
  • SLSVP = Salt Lake, Sevier Valley & Pioche RR Co.
  • SMSRy = Stone Mountain Scenic Ry.
  • Som = Somerset RR, Maine
  • SoV = Sonoma Valley RR
  • SP = Southern Pacific RR
  • SP&C = St. Paul & Chicago Railroad
  • SP&P = Saint Paul & Pacific RR, early predecessor of Milwaukee Road
  • SP&SC = St. Paul & Sioux City
  • SPdeM = Sud Pacifico de Mexico, subsidiary of SP
  • SPRR = South Pictou RR, also called Albion Mines Ry
  • SPTx = Southern Pacific Railroad of Texas
  • SR = Sandy River Railroad
  • SR&RL = Sandy River & Rangeley Lakes Railroad
  • SR&SQ = San Rafael & San Quentin
  • SRR = Southern RR
  • ST = Sutro Tunnel RR (3' gauge)
  • ST&E = Stockton Terminal & Eastern
  • StAL = Stillmore Air Line Railway
  • SV = Sacramento Valley RR, bought by CP
  • SW = South Western Railroad
  • SyC = Sandy Creek RR, Cortez, Pennsylvania
  • T&A = Tennessee & Alabama
  • T&B = Troy & Boston RR
  • T&G = Troy & Greenbush Railroad
  • T&I = Toledo & Illinois RR
  • T&MNG = Toledo & Maumee Narrow Gauge RR
  • T&N = Toronto & Nipissing RR
  • T&NO = Texas & New Orleans RR, bought by SP
  • T&R = Troy & Rutland
  • T&SL = Texas & St. Louis RR
  • TC&D = Tuscumbia, Courtland & Decatur
  • TC&SL = Toledo, Cincinnati & St Louis (3' gauge)
  • TD&B = Toledo, Delphos & Burlington (3' gauge)
  • TD&I = Toledo, Delphos & Indianapolis (3' gauge)
  • TMER&L = The Milwaukee Electric Railway & Light Company
  • TN&C = Toledo, Norwalk & Cleveland
  • Tn&P = Tennessee & Pacific Railroad
  • TNG = Tahoe Narrow Gauge RR
  • Tonw = Tonawanda
  • TRR = Tioga Railroad
  • TS&M = Toledo, Saginaw & Muskegon
  • TT = Tyler Tap, bought by T&SL
  • TxT = Texas Trunk RR, bought by SP
  • U&BR = Utica & Black River RR
  • U&N = Utah & Northern, Ex-Utah Northern
  • UE = Utah Eastern RR Co.
  • UP = Union Pacific RR
  • USED = United States Engineer Department Railroad
  • USM = United States Military RR, operated on trackage rights during the Civil War
  • Ut&S = Utica & Schenectady RR
  • UW = Utah Western Ry Co.
  • V&B = Vicksburg & Brunswick
  • V&J = Vicksburg & Jackson RR
  • V&M = Vermont & Massachusetts
  • V&T = Virginia & Truckee Ry.
  • Va&T = Virginia & Tennessee RR
  • VC = Virginia Central
  • VC&RV = Vanegas, Cedral & Rio Verde RR (3' gauge)
  • VLCO = Verdi Lumber Co., Nevada
  • VR = Vienna-Raab Ry.
  • VRR = Visalia RR, bought by SP
  • VS&T = Vicksburg, Shreveport & Texas
  • VV = Vermont Valley RR
  • VV&CL = Vaca Valley & Clear Lake, Vaca Valley RR; bought by SP
  • W&A = Western & Atlantic
  • W&Al = Winchester & Alabama
  • W&AR = Windsor & Annapolis Railway
  • W&JV = Wasatch & Jordan Valley RR Co.
  • W&LE = Wheeling & Lake Erie RR
  • W&P = Wicomico & Pocomoke RR
  • W&R = Watertown & Rome RR
  • W&S = Wilmington & Susquehanna RR
  • WAC = Waialua Agricultural Co.
  • WaSC = Waimanalo Sugar Co.
  • WC = Washington County RR (66" gauge), bought by H&TC
  • WCRy = Wellington Colliery Ry.
  • Wi&P = Winchester & Potomac RR
  • Wi&R = Wilmington & Raleigh RR
  • WiP = Wiaminlo Plantation
  • WMC = Waiakea Mill Co
  • WofM = Western RR of Massachusetts
  • WR = Ware River RR, Massachusetts
  • WRR = Western RR
  • WSC = Waiane Sugar Co.
  • WStL&P = Wabash, St Louis & Pacific RR
  • WT = Whitney Timber Co.
  • WU = Western Union Railroad
  • WV = Western Vermont RR
  • WW&CR = Walla Walla & Columbia River (3' gauge)
  • WY&G = Wrightsville, York & Gettysburg RR
  • YV = Yosemite Valley Ry.