ACL
| Atlantic Coast Line | 1 |
AMTK
| Amtrak | 12 |
ATSF
| Atchison Topeka & Santa Fe | 7 |
BHC
| Black Hills Central | 2 |
BN
| Burlington Northern | 1 |
BRW
| Black River And Western | 2 |
CBQ
| Chicago Burlington & Quincy | 8 |
CNW
| Chicago & Northwestern | 2 |
CP
| Canadian Pacific Railway | 1 |
CRIP
| Chicago Rock Island & Pacific | 4 |
CRRX
| Canon City and Royal Gorge Railroad LLC | 2 |
CS
| Colorado & Southern | 2 |
CSS
| Chicago South Shore And South Bend | 6 |
DH
| Delaware & Hudson | 1 |
DRGW
| Denver & Rio Grande Western | 6 |
GBW
| Green Bay & Western | 1 |
GMO
| Gulf Mobile & Ohio | 2 |
GN
| Great Northern | 8 |
LN
| Louisville & Nashville | 1 |
MILW
| Milwaukee Road | 3 |
MP
| Missouri Pacific | 1 |
MRLX
| Mid America Rail Car Leasing | 1 |
NJT
| New Jersey Transit | 1 |
NP
| Northern Pacific | 8 |
NW
| Norfolk & Western | 1 |
NYC
| New York Central | 1 |
OE
| Oregon Electric | 2 |
PPCX
| AAPRCO Register Private Cars | 1 |
SLRG
| San Luis and Rio Grande Railroad | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 9 |
UP
| Union Pacific Railroad Company | 20 |
UPP
| Union Pacific Passenger | 2 |
USAX
| United States Army | 1 |
VSPS
| VSPS | 1 |
WC
| Wisconsin Central | 2 |
WP
| Western Pacific | 2 |