AA
| Ann Arbor | 2 |
ACFX
| General Electric Rail Services | 2 |
ACL
| Atlantic Coast Line | 4 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 11 |
CABX
| Cabot Corporation | 1 |
CBQ
| Chicago Burlington & Quincy | 170 |
CG
| Central Of Georgia | 2 |
CGW
| Chicago Great Western | 5 |
CIW
| Chicago & Illinois Western | 1 |
CNW
| Chicago & Northwestern | 1 |
CR
| Conrail | 1 |
CS
| Colorado & Southern | 5 |
CSS
| Chicago South Shore And South Bend | 2 |
CSX
| CSX Railroad | 1 |
GACX
| General American Marks Company | 3 |
IC
| Illinois Central | 1 |
IMCX
| Mosaic Company | 1 |
LN
| Louisville & Nashville | 6 |
MILW
| Milwaukee Road | 1 |
MKT
| Missouri-Kansas-Texas | 3 |
MNS
| Minneapolis Northfield & Southern | 1 |
MP
| Missouri Pacific | 1 |
NAHX
| General Electric Rail Services | 1 |
NYC
| New York Central | 1 |
PLCX
| General Electric Rail Services | 1 |
PRR
| Pennsylvania Railroad | 2 |
RDG
| Reading Railroad | 1 |
RI
| RI | 1 |
SAL
| Seaboard Air Line | 1 |
SCL
| Seaboard Coast Line | 1 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
SSIX
| General Electric Rail Services | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
UP
| Union Pacific Railroad Company | 12 |