ABOX
| TTX Company | 1 |
ATSF
| Atchison Topeka & Santa Fe | 6 |
BAR
| Bangor & Aroostook | 2 |
BCOL
| Canadian National Railways | 1 |
BKTY
| Union Pacific Railroad Company | 1 |
BLE
| Bessemer & Lake Erie | 1 |
BM
| Boston & Maine | 2 |
BN
| Burlington Northern | 5 |
BO
| Baltimore & Ohio | 3 |
CBQ
| Chicago Burlington & Quincy | 4 |
CG
| Central Of Georgia | 1 |
CNIS
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 2 |
CP
| Canadian Pacific Railway | 5 |
CPI
| Canadian Pacific Railway | 1 |
CR
| Conrail | 8 |
CSX
| CSX Railroad | 1 |
DH
| Delaware & Hudson | 2 |
DRGW
| Denver & Rio Grande Western | 2 |
EACH
| East Camden and Highland | 1 |
EL
| Erie Lackawanna | 2 |
EN
| Esquimalt & Nanaimo | 1 |
GN
| Great Northern | 7 |
GTW
| Grand Trunk Western | 1 |
IC
| Illinois Central | 2 |
ICG
| Illinois Central Gulf | 3 |
KCS
| Kansas City Southern | 2 |
LN
| Louisville & Nashville | 6 |
LSI
| Lake Superior and Ishpeming Railroad | 1 |
LV
| Lehigh Valley | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 1 |
MKT
| Missouri-Kansas-Texas | 1 |
MON
| Monon Route | 1 |
MP
| Missouri Pacific | 1 |
MR
| McCloud Railway Company | 1 |
NP
| Northern Pacific | 6 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 1 |
NYC
| New York Central | 2 |
PC
| Penn Central | 1 |
PHD
| Port Huron and Detroit Railroad Company | 1 |
PRR
| Pennsylvania Railroad | 1 |
PRV
| Pearl River Valley Railroad Company | 1 |
RBBN
| Burlington Northern | 1 |
RBOX
| Railbox Company | 1 |
RDG
| Reading Railroad | 1 |
RI
| RI | 1 |
ROCK
| Rock Island | 7 |
SAL
| Seaboard Air Line | 2 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 6 |
SL-S
| SL-S | 1 |
SLSF
| Saint Louis-San Francisco | 4 |
SOU
| Southern | 1 |
SOUT
| SOUT | 3 |
SP
| Southern Pacific | 8 |
SPS
| Spokane Portland & Seattle | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 4 |
TP
| Texas & Pacific | 1 |
TPW
| Toledo Peoria & Western | 1 |
UP
| Union Pacific Railroad Company | 8 |
VS
| V and S Railway Incorporated | 1 |
WA
| Washington & Atlanta Railroad | 1 |
WAB
| Wabash | 2 |
YS
| Youngstown Southern Ry | 1 |
YW
| Yreka Western Railroad Company | 2 |