ALY
| Allegheny and Eastern Railroad Incorpora | 1 |
BAR
| Bangor & Aroostook | 1 |
BM
| Boston & Maine | 1 |
CN
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 3 |
CR
| Conrail | 1 |
GN
| Great Northern | 1 |
IATR
| Iowa Traction Railroad Company | 1 |
LI
| Long Island Rail Road Company | 6 |
UP
| Union Pacific Railroad Company | 1 |