ATSF
| Atchison Topeka & Santa Fe | 1 |
BNSF
| BNSF Railway | 5 |
CN
| Canadian National Railways | 9 |
CNA
| Canadian National Railways | 7 |
CP
| Canadian Pacific Railway | 6 |
CPAA
| Canadian Pacific Railway | 2 |
GTW
| Grand Trunk Western | 4 |
NS
| Norfolk Southern | 3 |
SOO
| Soo Line | 1 |
SP
| Southern Pacific | 6 |
TTGX
| TTX Company-Autoracks | 150 |