BCOL
| Canadian National Railways | 1 |
BR
| Buffalo and Pittsburgh | 2 |
CSX
| CSX Railroad | 3 |
HLSC
| Hampton Railway Incorporated | 1 |
MEC
| Maine Central | 5 |
MMA
| Montreal, Maine & Atlantic | 3 |
TTZX
| TTX Company-Centerbeam Flats | 6 |
UP
| Union Pacific Railroad Company | 1 |
WRWK
| Providence & Worchester Railroad | 7 |