ATSF
| Atchison Topeka & Santa Fe | 2 |
BN
| Burlington Northern | 10 |
BNSF
| BNSF Railway | 5 |
EPTC
| East Portland Traction | 2 |
GN
| Great Northern | 11 |
MP
| Missouri Pacific | 1 |
NP
| Northern Pacific | 9 |
OCSR
| OCSR | 8 |
OPR
| Oregon Pacific | 1 |
PNWR
| Portland and Western Railroad Incorporat | 2 |
SP
| Southern Pacific | 44 |
TSWR
| Toppenish, Simcoe & Western Railroad | 3 |
UP
| Union Pacific Railroad Company | 12 |
WPRR
| Willamette and Pacific | 2 |