ANR
| Angelina and Neches River Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 29 |
BN
| Burlington Northern | 13 |
BO
| Baltimore & Ohio | 3 |
CBQ
| Chicago Burlington & Quincy | 3 |
CO
| Chesapeake & Ohio | 2 |
CR
| Conrail | 1 |
CRIP
| Chicago Rock Island & Pacific | 4 |
FWD
| Fort Worth & Denver | 2 |
KCS
| Kansas City Southern | 2 |
KRL
| Kasgro Rail Lines | 3 |
MKT
| Missouri-Kansas-Texas | 11 |
MP
| Missouri Pacific | 39 |
NP
| Northern Pacific | 1 |
NW
| Norfolk & Western | 7 |
PVS
| Pecos Valley Southern Railway Company | 1 |
RESX
| Rescar | 2 |
SLSF
| Saint Louis-San Francisco | 6 |
SP
| Southern Pacific | 12 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TM
| Texas-Mexican | 1 |
UP
| Union Pacific Railroad Company | 25 |