AMTK
| Amtrak | 10 |
ATAX
| Arizona Transit Assembly | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
BDLX
| Big Dog Lines | 1 |
BNSF
| BNSF Railway | 24 |
CBQ
| Chicago Burlington & Quincy | 1 |
CBRW
| Columbia Basin Railroad | 9 |
COP
| City of Prineville Railway | 4 |
CP
| Canadian Pacific Railway | 2 |
DRGW
| Denver & Rio Grande Western | 1 |
EIRR
| Eastern Idaho Railroad Incorporated | 1 |
GN
| Great Northern | 3 |
LRC
| LRC | 2 |
MILW
| Milwaukee Road | 2 |
MRL
| Montana Rail Link | 39 |
MRLX
| Mid America Rail Car Leasing | 19 |
NP
| Northern Pacific | 7 |
NRE
| NRE | 7 |
NSR
| Newburgh and South Shore Railroad Compan | 1 |
NSRX
| Railroading Heritage Of Midwest America | 9 |
PLLX
| Plymouth And Lincoln Railroad Corp | 2 |
PPCX
| AAPRCO Register Private Cars | 85 |
RPCX
| Railroad Passenger Car Numbering Bureau | 11 |
SLRG
| San Luis and Rio Grande Railroad | 3 |
SVRY
| SVRY | 3 |
TCRY
| Tri-City Railroad | 4 |
TMBL
| Tacoma Municipal Belt Line Railway | 5 |
TSU
| Tulsa-Sapulpa Union Railway | 4 |
UP
| Union Pacific Railroad Company | 1 |
UPP
| Union Pacific Passenger | 11 |