CBQ
| Chicago Burlington & Quincy | 2 |
CN
| Canadian National Railways | 6 |
CSL
| Chicago Short Line Railway Company | 1 |
LNE
| Lehigh and New England Ry | 2 |
PWV
| Pittsburgh & West Virginia | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SLSF
| Saint Louis-San Francisco | 4 |
SRY
| Southern Railway of British Columbia Lim | 2 |
TTR
| Talleyrand Terminal Railroad Company | 1 |
UP
| Union Pacific Railroad Company | 16 |