ATSF
| Atchison Topeka & Santa Fe | 1 |
BNSF
| BNSF Railway | 1 |
CNW
| Chicago & Northwestern | 2 |
CR
| Conrail | 1 |
DRGW
| Denver & Rio Grande Western | 2 |
EL
| Erie Lackawanna | 8 |
GN
| Great Northern | 1 |
HPJX
| Helm-Pacific Leasing | 1 |
MP
| Missouri Pacific | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SP
| Southern Pacific | 1 |
WE
| Wheeling & Lake Erie | 1 |
WP
| Western Pacific | 2 |