A&W (Ahnapee & Western)
AC (Algoma Central)
AC&Y
ACFX
ACL
ACMX (Allis Chalmers)
AD&N (Ashley Drew & Northern)
AGS
ARR (Alaska Railroad)
AT&SF (Santa Fe)
B&LE
B&M
B&O
B&OCT
B&S (Birmingham & Southern)
BA&P
BCK
BWC
C&BL (Conemaush & Blackjack Railroad)
C&EI
C&H (Calumet & Hecla)
C&I (Cambria & Indiana)
C&IM
C&NW
C&O
C&S (Colorado & Southern)
C&WI
CAS (Canadian Southern)
CB&Q
CGW
CIE (Coras Iompair Eireann [Irish Transport System])
CIRR
CMStP&P (Milwaukee Road)
CNR (Canadian National)
CNJ (Central Railroad of New Jersey)
CNO&TP (Southern)
CNS&M (Chicago North Shore & Milwaukee)
CofG (Central of Georgia)
COPR (Copper Range Railroad)
CP (Canadian Pacific)
CRI&P (Rock Island)
CRR (Clinchfield)
CSSB&SB (Chicago South Shore & South Bend)
CStPM&O (Omaha Road)
CVX
CWP&S (Chicago West Pullman & Southern)
D&H
D&RGW
D&TS
DL&W (Delaware Lackawanna & Western)
DM&IR
DRI&NW
DSS&A
DT&I
DUPX
E&LS
EJ&E
EL (Erie Lackawanna)
ERIE
FBL
FDDM&S (Fort Dodge Des Moines & Southern)
FEC (Florida East Coast)
FGEX
GA (Georgia Railroad)
GACX
GB&W
GCOX
GM&O
GN (Great Northern)
GTW
HCRR
INT
ITC
ITTX
KCS
KGB&W
KO&G (Kansas Oklahoma & Gulf)
L&N
LHR
LPS
LS&I
LT (The Lake Terminal Railroad)
LV (Lehigh Valley)
M&StL
MKCRR (McKees Connecting Railroad)
MKT
MON (Monon)
MP
N&B (Northampton & Bath)
N&W
NADX
NdeM
NH
NJI&I (Wabash)
NKP (New York Chicago & St Louis, aka Nickel Plate)
NMCX
NO&NE (New Orleans & Northeastern, i.e. Southern)
NP
NSS
NSW
NWX
NYNH&H (New Haven)
ON (Ontario Northland)
P&LE
P&N
P&PU
P&S (Pittsburgh & Shawmut)
P&WV (Pittsburgh & West Virginia)
PB&R (Patapsco & Black Rivers)
PBNE
PGE
PMK&Y
PRR (Pennsylvania)
RDG (Reading)
RF&P
RS&P
RUT (Rutland)
RVCX (Richter Vinegar Corp)
S&B
SB (South Buffalo Railway)
SBD (Seaboard)
SHPX
SLG&W
SN (Sacramento Northern)
SOO
SOU
SP
SP&S
StLSF (St Louis-San Francisco, aka Frisco)
StLSW (St Louis Southwestern, aka Cotton Belt, aka SSW)
StJ&GI
T&N (Texas & Northern)
TA&G
TC (Tennessee Central)
TCIX
TENN (Tennessee Railroad)
TH&B (Toronto Hamilton & Buffalo)
TM (Texas Mexican)
TP&W
UM&P
UP
URR (Union Railroad)
URTX
USP&F
UTAH
VGN (Virginian)
VTR
WA&G (Wellsville Addison & Galeton)
WAB (Wabash)
WCF&N (Waterloo Cedar Falls & Northern)
WECX (Westinghouse)
WICO
WM (Western Maryland)
WofA
WP
WRX
Y&N (Youngstown & Northern)
YVT