AOK
| Arkansas-Oklahoma Railroad | 3 |
ATSF
| Atchison Topeka & Santa Fe | 11 |
BNSF
| BNSF Railway | 9 |
BTTX
| TTX Company - Autoracks | 3 |
CN
| Canadian National Railways | 18 |
CNA
| Canadian National Railways | 10 |
CP
| Canadian Pacific Railway | 16 |
CPAA
| Canadian Pacific Railway | 5 |
ETTX
| TTX Company - Autoracks | 130 |
GTW
| Grand Trunk Western | 14 |
KCS
| Kansas City Southern | 3 |
NS
| Norfolk Southern | 10 |
PW
| Providence and Worcester | 5 |
SOO
| Soo Line | 4 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 29 |
SSW
| St Louis Southwestern (Cotton Belt) | 23 |
TTGX
| TTX Company-Autoracks | 135 |
TTQX
| TTX Company-Autoracks | 2 |
TTUX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 2 |