ATSF
| Atchison Topeka & Santa Fe | 2 |
BAR
| Bangor & Aroostook | 1 |
BCOL
| Canadian National Railways | 3 |
BN
| Burlington Northern | 1 |
CN
| Canadian National Railways | 2 |
CP
| Canadian Pacific Railway | 8 |
CSX
| CSX Railroad | 5 |
CWWR
| Chehalis Western | 1 |
DQE
| De Queen and Eastern Railroad Incorporat | 2 |
EL
| Erie Lackawanna | 1 |
ERES
| Erie Western | 1 |
GCRX
| Grand Canyon Railway Incorporated | 1 |
GCRY
| Grand Canyon Railway | 1 |
MR
| McCloud Railway Company | 1 |
OCE
| Oregon California & Eastern | 1 |
PGE
| Pacific Great Eastern | 4 |
RSP
| Roscoe Snyder and Pacific Railway | 1 |
RSS
| Rockdale, Sandow & Southern Railroad | 1 |
SBC
| Ferrocarril Sonora Baja California | 1 |
SDNX
| Coaster | 4 |
SPMW
| Southern Pacific Maintenance of Way | 1 |
UP
| Union Pacific Railroad Company | 3 |
VCY
| Galveston Railroad, L.P. | 1 |
WNCR
| WNCR | 3 |
WOV
| Warren & Ouachita Valley | 1 |
WP
| Western Pacific | 1 |
WTCX
| Weyerhauser | 1 |