ARR
| Alaska Railroad | 5 |
BN
| Burlington Northern | 8 |
CBQ
| Chicago Burlington & Quincy | 1 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CNW
| Chicago & Northwestern | 2 |
COP
| City of Prineville Railway | 111 |
DSNG
| Durango & Silverton Narrow Gauge Railroa | 1 |
IBT
| International Bridge and Terminal Company | 1 |
LPN
| Longview, Portland & Northern | 4 |
LUNX
| General Electric Rail Services | 8 |
LVRC
| Lamoille Valley | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MR
| McCloud Railway Company | 53 |
NN
| Northern Nevada Railroad Corporation | 6 |
NOKL
| Northwestern Oklahoma | 2 |
NRMX
| NRMX | 1 |
OCE
| Oregon California & Eastern | 13 |
ONW
| Oregon & Northwestern | 4 |
OPE
| Oregon Pacific & Eastern | 7 |
PMAX
| PMA Transportation Corporation | 1 |
POTB
| Port of Tillamook Bay | 8 |
PT
| Peninsula Terminal Company | 4 |
SPS
| Spokane Portland & Seattle | 27 |
SRY
| Southern Railway of British Columbia Lim | 1 |
SVRY
| SVRY | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
UO
| Union Railway of Oregon | 9 |
UP
| Union Pacific Railroad Company | 2 |
USAX
| United States Army | 1 |
USLX
| General Electric Rail Services | 83 |
USN
| United States Navy | 5 |
VS
| V and S Railway Incorporated | 5 |
VT
| Virginia & Truckee | 1 |
WCTR
| WCTU Company White City Terminal Railway | 5 |
WP
| Western Pacific | 1 |