AKMD
| Arkansas Midland Railroad Company | 2 |
ATSF
| Atchison Topeka & Santa Fe | 4 |
BAYL
| Bay Line, LLC | 1 |
BLE
| Bessemer & Lake Erie | 4 |
BN
| Burlington Northern | 8 |
BO
| Baltimore & Ohio | 4 |
BOMX
| B&O Railroad Museum Inc. | 1 |
BRC
| Belt Railway of Chicago | 8 |
CBQ
| Chicago Burlington & Quincy | 2 |
CNW
| Chicago & Northwestern | 10 |
CO
| Chesapeake & Ohio | 1 |
CR
| Conrail | 9 |
CRIP
| Chicago Rock Island & Pacific | 2 |
CSL
| Chicago Short Line Railway Company | 1 |
CSS
| Chicago South Shore And South Bend | 1 |
CSX
| CSX Railroad | 5 |
EJE
| Elgin Joliet and Eastern | 1 |
EL
| Erie Lackawanna | 1 |
GSMR
| Great Smoky Mountains | 1 |
GWAX
| Railroad Salvage and Restoration Incorporated | 1 |
HOG
| Heart of Georgia | 2 |
IBCX
| Indiana Box Car Corporation | 2 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 6 |
IHB
| Indiana Harbor Belt | 1 |
INRD
| Indiana Railroad | 1 |
ITC
| Illinois Terminal Railroad | 3 |
LI
| Long Island Rail Road Company | 1 |
LIRC
| Louisville & Indiana | 1 |
LN
| Louisville & Nashville | 3 |
LV
| Lehigh Valley | 1 |
MB
| Meridian & Bigbee | 5 |
METX
| METRA | 1 |
MGA
| Monongahela RR | 1 |
MILW
| Milwaukee Road | 1 |
MKT
| Missouri-Kansas-Texas | 2 |
MP
| Missouri Pacific | 6 |
NCSL
| Nashville Chattanooga & St Louis | 1 |
NKP
| Nickel Plate | 2 |
NP
| Northern Pacific | 1 |
NS
| Norfolk Southern | 5 |
NW
| Norfolk & Western | 4 |
NYC
| New York Central | 1 |
PLE
| Pittsburgh & Lake Erie | 1 |
PRR
| Pennsylvania Railroad | 6 |
RDG
| Reading Railroad | 1 |
RJCR
| RJ Corman | 1 |
SAL
| Seaboard Air Line | 3 |
SBD
| Seaboard System | 1 |
SGLR
| Seminole Gulf | 1 |
SOO
| Soo Line | 6 |
SOU
| Southern | 3 |
SPAX
| Southeastern Pennsylvania Transportation (SEPTA) | 1 |
TUGX
| Texas Utilities Mining Company | 1 |
UP
| Union Pacific Railroad Company | 2 |
WAB
| Wabash | 1 |
WFS
| West Isle Line Incorporated | 1 |
WP
| Western Pacific | 1 |
WVRR
| Whitewater Valley Railroad | 1 |