AGR
| Alabama and Gulf Coast | 1 |
ATSF
| Atchison Topeka & Santa Fe | 21 |
ATW
| Atlantic and Western | 1 |
BN
| Burlington Northern | 42 |
BNSF
| BNSF Railway | 15 |
CBQ
| Chicago Burlington & Quincy | 5 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 3 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 1 |
DM
| Detroit & Mackinac | 1 |
DME
| Dakota, Minnesota and Eastern | 1 |
DWC
| Canadian National Railways | 2 |
GNWR
| Genesee and Wyoming Railroad Company | 3 |
GRN
| Greenville & Northern | 1 |
IATR
| Iowa Traction Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 1 |
MP
| Missouri Pacific | 1 |
MRL
| Montana Rail Link | 6 |
NS
| Norfolk Southern | 2 |
PDRR
| Pee Dee River RR | 1 |
RBOX
| Railbox Company | 1 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 1 |
ROCK
| Rock Island | 1 |
SCNT
| SCNT | 1 |
SOO
| Soo Line | 1 |
SP
| Southern Pacific | 1 |
SRY
| Southern Railway of British Columbia Lim | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 2 |
TR
| Tomahawk Railway L.P. | 1 |