AGR
| Alabama and Gulf Coast | 2 |
AN
| Apalachicola Northern | 2 |
ATW
| Atlantic and Western | 4 |
BAEX
| Andersons | 1 |
BM
| Boston & Maine | 1 |
BNSF
| BNSF Railway | 2 |
CNW
| Chicago & Northwestern | 5 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 8 |
EEC
| East Erie Commercial Railroad | 68 |
FGLK
| Finger Lakes Railway | 1 |
GMRC
| Green Mountain RR | 8 |
GTRA
| Golden Triangle Railroad | 1 |
HS
| H and S Railroad Company | 25 |
KCS
| Kansas City Southern | 5 |
KRR
| Kiamichi | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 8 |
MEC
| Maine Central | 20 |
MMA
| Montreal, Maine & Atlantic | 5 |
MRL
| Montana Rail Link | 2 |
MSDR
| Knoxville & Holston River Railroad | 2 |
NS
| Norfolk Southern | 1 |
PDRR
| Pee Dee River RR | 12 |
SIRX
| Southern Illinois Railcar Company | 1 |
SLGG
| Progress Rail Services Corporation | 3 |
SLR
| St Lawrence & Atlantic | 2 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 3 |
SRN
| Sabine River & Northern | 2 |
WC
| Wisconsin Central | 6 |
WCCL
| Wisconsin Central | 1 |
YB
| Youngstown Belt Railroad Company | 4 |