ACL
| Atlantic Coast Line | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BM
| Boston & Maine | 1 |
BO
| Baltimore & Ohio | 1 |
CG
| Central Of Georgia | 1 |
CNL
| Columbia Newberry & Laurens | 1 |
CO
| Chesapeake & Ohio | 4 |
CRR
| Clinchfield | 7 |
DH
| Delaware & Hudson | 1 |
GA
| Georgia Railroad | 2 |
GRLW
| Greenville & Western Railway Company, LLC | 3 |
LN
| Louisville & Nashville | 6 |
LRS
| Laurinburg and Southern | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 6 |
OWTX
| Oneida & Western Transportation | 2 |
PICK
| Pickens Railway | 1 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
SAL
| Seaboard Air Line | 1 |
SBD
| Seaboard System | 7 |
SCL
| Seaboard Coast Line | 15 |
SOU
| Southern | 44 |
SQVR
| Sequatchie Valley Railroad | 1 |
WM
| Western Maryland | 1 |