AM
| Arkansas & Missouri | 4 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 20 |
BN
| Burlington Northern | 12 |
BNSF
| BNSF Railway | 247 |
BO
| Baltimore & Ohio | 3 |
CNW
| Chicago & Northwestern | 15 |
CR
| Conrail | 5 |
CSX
| CSX Railroad | 99 |
DLWR
| Depew Lancaster and Western Railroad Com | 1 |
DMM
| Dansville and Mount Morris Railroad Comp | 24 |
FSR
| Fort Smith Railroad Company | 1 |
GACX
| General American Marks Company | 19 |
GBRX
| Greenbrier Leasing Corporation | 4 |
GN
| Great Northern | 1 |
GNRR
| Georgia Northeastern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 67 |
KCS
| Kansas City Southern | 87 |
LRS
| Laurinburg and Southern | 1 |
MEC
| Maine Central | 1 |
MNNR
| Minnesota Commercial | 2 |
MNTX
| Minnesota Transportation Museum, Inc. | 1 |
MP
| Missouri Pacific | 11 |
MRMX
| Midwest Railcar Corporation | 1 |
MWCX
| Midwest Railcar Corporation | 1 |
NS
| Norfolk Southern | 53 |
NYC
| New York Central | 4 |
PACX
| Plasser American Corporation | 1 |
PC
| Penn Central | 8 |
SAL
| Seaboard Air Line | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOO
| Soo Line | 10 |
SOU
| Southern | 162 |
TR
| Tomahawk Railway L.P. | 7 |
UCRY
| Utah Central | 1 |
WC
| Wisconsin Central | 141 |
WRWK
| Providence & Worchester Railroad | 50 |
YARR
| Youngstown and Austintown Railroad | 1 |