ALM
| Arkansas Louisiana and Mississippi Railr | 4 |
ASAB
| Bay Line Railroad LLC | 2 |
ATN
| Alabama & Tennessee River Railway Llc | 1 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BHS
| Bonhomie & Hattiesburg Southern | 1 |
BN
| Burlington Northern | 1 |
CAGY
| Columbus & Greenville Railway | 2 |
CN
| Canadian National Railways | 1 |
CSX
| CSX Railroad | 1 |
CZCX
| Crown Zellerbach Corporation | 2 |
DQE
| De Queen and Eastern Railroad Incorporat | 3 |
DRGW
| Denver & Rio Grande Western | 2 |
FCG
| FCG | 1 |
GMO
| Gulf Mobile & Ohio | 5 |
ICG
| Illinois Central Gulf | 9 |
KCS
| Kansas City Southern | 12 |
LN
| Louisville & Nashville | 6 |
LNW
| Louisiana & Northwestern | 8 |
MB
| Meridian & Bigbee | 2 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 11 |
MSE
| Mississippi Export Railroad Company | 3 |
MSRC
| Kansas City Southern | 1 |
NCRC
| Nebraska Central | 1 |
NLG
| Kansas City Southern Railway Company (North Louisiana & Gulf) | 2 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 2 |
SLGW
| Salt Lake Garfield and Western Railway Company | 1 |
SLSF
| Saint Louis-San Francisco | 5 |
SOU
| Southern | 4 |
SP
| Southern Pacific | 7 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
WP
| Western Pacific | 1 |