AMTK
| Amtrak | 7 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 2 |
BO
| Baltimore & Ohio | 6 |
CBQ
| Chicago Burlington & Quincy | 7 |
CBRX
| Charles Barthold | 1 |
CC
| Chicago Central & Pacific | 3 |
CIM
| Chicago And Illinois Midland | 1 |
CN
| Canadian National Railways | 1 |
CNA
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 2 |
CONW
| Colorado & North Western | 6 |
CRDX
| Chicago Freight Car Leasing Company | 1 |
CRIP
| Chicago Rock Island & Pacific | 2 |
CS
| Colorado & Southern | 11 |
CTS
| Cumbres & Toltec Scenic | 1 |
CYZ
| CYZ | 1 |
DH
| Delaware & Hudson | 1 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
DRG
| DRG | 6 |
DRGW
| Denver & Rio Grande Western | 93 |
DSPP
| Denver, South Park & Pacific RR | 1 |
EVEX
| EVEX | 3 |
FCC
| Flagg Coal Co. | 4 |
GLRX
| Georgetown Loop Railroad Incorporated | 4 |
GMO
| Gulf Mobile & Ohio | 1 |
GN
| Great Northern | 6 |
IC
| Illinois Central | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MNS
| Minneapolis Northfield & Southern | 1 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
NADX
| General Electric Rail Services | 1 |
NIRX
| General Electric Rail Services | 1 |
NJT
| New Jersey Transit | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NP
| Northern Pacific | 3 |
NS
| Norfolk Southern | 2 |
OCE
| Oregon California & Eastern | 1 |
OE
| Oregon Electric | 1 |
PC
| Penn Central | 1 |
PFE
| Pacific Fruit Express | 1 |
PICK
| Pickens Railway | 2 |
PLE
| Pittsburgh & Lake Erie | 2 |
PLM
| PLM | 2 |
RBBQ
| Chicago, Burlington and Quincy Reefers | 8 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
RGS
| Rio Grande Southern | 2 |
SCL
| Seaboard Coast Line | 1 |
SLC
| San Luis Central Railroad Company | 7 |
SOO
| Soo Line | 2 |
SOU
| Southern | 4 |
SP
| Southern Pacific | 1 |
TBOX
| TTX Company | 1 |
TCAX
| General Electric Rail Services | 1 |
TNCX
| General Electric Rail Services | 1 |
UP
| Union Pacific Railroad Company | 15 |
UPP
| Union Pacific Passenger | 4 |