AGR
| Alabama and Gulf Coast | 1 |
ALM
| Arkansas Louisiana and Mississippi Railr | 2 |
BCOL
| Canadian National Railways | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 2 |
CIC
| Cedar Rapids & Iowa City | 1 |
CSX
| CSX Railroad | 1 |
EEC
| East Erie Commercial Railroad | 3 |
FBOX
| TTX Company | 1 |
GMRC
| Green Mountain RR | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTW
| Grand Trunk Western | 1 |
IATR
| Iowa Traction Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 2 |
MEC
| Maine Central | 1 |
MP
| Missouri Pacific | 1 |
NS
| Norfolk Southern | 3 |
SOU
| Southern | 5 |
TBOX
| TTX Company | 1 |