AARX
| Association of American Railroads | 2 |
AMTK
| Amtrak | 15 |
ARR
| Alaska Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 20 |
BNSF
| BNSF Railway | 11 |
CBQ
| Chicago Burlington & Quincy | 2 |
DM
| Detroit & Mackinac | 1 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
DRGW
| Denver & Rio Grande Western | 1 |
FNTX
| Ferronet Sa De Cv | 1 |
GN
| Great Northern | 1 |
IC
| Illinois Central | 1 |
JESX
| James E Strates Shows | 1 |
MCRX
| Marcus Rail Transport LLC | 1 |
NN
| Northern Nevada Railroad Corporation | 1 |
PPCX
| AAPRCO Register Private Cars | 2 |
PRR
| Pennsylvania Railroad | 2 |
RBBX
| Ringling Bros. and Barnum and Bailey | 5 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SDAE
| San Diego & Arizona Eastern | 1 |
SLRG
| San Luis and Rio Grande Railroad | 2 |
SP
| Southern Pacific | 14 |
UPP
| Union Pacific Passenger | 18 |