ASFX
| American Steel Foundries | 1 |
ATSF
| Atchison Topeka & Santa Fe | 34 |
CGW
| Chicago Great Western | 2 |
CRIP
| Chicago Rock Island & Pacific | 12 |
HRZ
| HRZ | 2 |
MILW
| Milwaukee Road | 9 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 15 |
MRLX
| Mid America Rail Car Leasing | 1 |
SAL
| Seaboard Air Line | 2 |
SCL
| Seaboard Coast Line | 2 |
SLSF
| Saint Louis-San Francisco | 3 |
SOU
| Southern | 2 |
UP
| Union Pacific Railroad Company | 47 |