AM
| Arkansas & Missouri | 1 |
ATSF
| Atchison Topeka & Santa Fe | 11 |
BN
| Burlington Northern | 8 |
CRIP
| Chicago Rock Island & Pacific | 3 |
CS
| Colorado & Southern | 1 |
DRG
| DRG | 1 |
DRGW
| Denver & Rio Grande Western | 14 |
MKT
| Missouri-Kansas-Texas | 12 |
MP
| Missouri Pacific | 6 |
NP
| Northern Pacific | 2 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SLSF
| Saint Louis-San Francisco | 6 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 3 |
UP
| Union Pacific Railroad Company | 4 |
WTXC
| WTXC | 1 |