AGR
| Alabama and Gulf Coast | 1 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AN
| Apalachicola Northern | 2 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ATW
| Atlantic and Western | 2 |
BKTY
| Union Pacific Railroad Company | 2 |
CFWR
| Caney Fork and Western Railroad | 3 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 3 |
EEC
| East Erie Commercial Railroad | 4 |
GMRC
| Green Mountain RR | 2 |
HS
| H and S Railroad Company | 3 |
KCS
| Kansas City Southern | 3 |
LRS
| Laurinburg and Southern | 1 |
MSDR
| Knoxville & Holston River Railroad | 1 |
NS
| Norfolk Southern | 36 |
SOU
| Southern | 4 |
SRN
| Sabine River & Northern | 1 |
WRWK
| Providence & Worchester Railroad | 1 |