AA
| Ann Arbor | 18 |
AC
| Algoma Central | 1 |
ACY
| Akron, Canton & Youngstown | 1 |
AMTK
| Amtrak | 1 |
ATW
| Atlantic and Western | 2 |
BAR
| Bangor & Aroostook | 4 |
BM
| Boston & Maine | 1 |
BO
| Baltimore & Ohio | 3 |
CBQ
| Chicago Burlington & Quincy | 2 |
CCLX
| Crystal Car Line | 1 |
CEI
| Chicago & Eastern Illinois | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CN
| Canadian National Railways | 7 |
CNIS
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 11 |
CO
| Chesapeake & Ohio | 2 |
CP
| Canadian Pacific Railway | 4 |
CR
| Conrail | 2 |
CRIP
| Chicago Rock Island & Pacific | 2 |
CRLE
| Coe Rail Incorporated | 1 |
CRR
| Clinchfield | 1 |
CSX
| CSX Railroad | 2 |
DH
| Delaware & Hudson | 1 |
DHNY
| Canadian Pacific (Delaware and Hudson Railway Company Incorp | 1 |
DM
| Detroit & Mackinac | 5 |
DRGW
| Denver & Rio Grande Western | 1 |
DTI
| Detroit Toledo & Ironton | 6 |
DWC
| Canadian National Railways | 1 |
EACH
| East Camden and Highland | 1 |
EL
| Erie Lackawanna | 1 |
FWD
| Fort Worth & Denver | 1 |
GBW
| Green Bay & Western | 1 |
GLC
| Great Lakes Central Railroad | 1 |
GMO
| Gulf Mobile & Ohio | 2 |
GMRC
| Green Mountain RR | 1 |
GN
| Great Northern | 9 |
GTW
| Grand Trunk Western | 13 |
HCRC
| Hillsdale County Ry. Co., Inc. | 1 |
KCS
| Kansas City Southern | 1 |
LOVX
| American Colloid Company | 3 |
LPS
| LPS | 1 |
LRS
| Laurinburg and Southern | 10 |
LRWN
| Little Rock & Western | 1 |
LV
| Lehigh Valley | 2 |
MIGN
| Michigan Northern | 5 |
MILW
| Milwaukee Road | 5 |
MISS
| Mississippian Railway Cooperative Incorporated | 1 |
MKT
| Missouri-Kansas-Texas | 1 |
MMRR
| Mid-Michigan Railroad Incorporated | 1 |
MNS
| Minneapolis Northfield & Southern | 2 |
MP
| Missouri Pacific | 3 |
MRRI
| MRRI | 1 |
MSV
| Mississippi and Skuna Valley Railroad Co | 1 |
MTW
| Marinette Tomahawk & Western | 2 |
NDEM
| NDEM | 1 |
NIRX
| General Electric Rail Services | 1 |
NP
| Northern Pacific | 2 |
NSRC
| North Stratford RR | 1 |
NYC
| New York Central | 3 |
OAR
| Old Augusta Railroad | 1 |
ONTA
| Ontario Northland Railway | 1 |
PACX
| Plasser American Corporation | 1 |
PE
| Peoria & Eastern | 1 |
PGER
| PGER | 1 |
PLE
| Pittsburgh & Lake Erie | 1 |
PM
| Pere Marquette | 1 |
PRR
| Pennsylvania Railroad | 1 |
RI
| RI | 3 |
SBD
| Seaboard System | 1 |
SLSF
| Saint Louis-San Francisco | 3 |
SM
| St. Marys Railroad | 3 |
SMW
| St Marys Railway West LLC | 3 |
SNCT
| Seattle & North Coast R.R. Co. | 2 |
SOO
| Soo Line | 3 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
SS
| Sand Springs Railway Company | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
STM
| STM | 1 |
THB
| Toronto Hamilton & Buffalo | 2 |
TM
| Texas-Mexican | 1 |
TSBY
| Great Lakes Central Railroad | 2 |
UP
| Union Pacific Railroad Company | 3 |
USAX
| United States Army | 5 |
USLX
| General Electric Rail Services | 1 |
VC
| Virginia Central Railway | 1 |
WAB
| Wabash | 6 |
WAG
| Wellsville Addison & Galeton | 1 |
WC
| Wisconsin Central | 5 |
WLO
| Waterloo Railway Company (Illinois Central) | 2 |
WM
| Western Maryland | 1 |
WRWK
| Providence & Worchester Railroad | 1 |
WSOR
| Wisconsin & Southern | 1 |
XXXX
| XXXX | 1 |
YS
| Youngstown Southern Ry | 1 |