CHV
| Chattahoochee Valley Ry | 1 |
CSX
| CSX Railroad | 2 |
HRRC
| Housatonic Railroad Company | 1 |
LN
| Louisville & Nashville | 1 |
MSRC
| Kansas City Southern | 2 |
PRR
| Pennsylvania Railroad | 1 |
SCL
| Seaboard Coast Line | 1 |
SOU
| Southern | 2 |
TC
| Temple & Central Texas | 1 |
UP
| Union Pacific Railroad Company | 2 |
WT
| Wrightsville & Tennille | 1 |