AA
| Ann Arbor | 1 |
ADN
| Ashley Drew & Northern | 5 |
AMR
| Arcata & Mad River | 1 |
AN
| Apalachicola Northern | 2 |
APA
| Apache Railway Company | 4 |
ASAB
| Bay Line Railroad LLC | 4 |
BCIT
| Canadian National Railways | 1 |
CBQ
| Chicago Burlington & Quincy | 11 |
CPLT
| CAMINO, PLACERVILLE & LAKE TAHOE RAILROAD CO. | 1 |
CR
| Conrail | 1 |