ARTX
| Artrain | 1 |
ATSF
| Atchison Topeka & Santa Fe | 16 |
BLE
| Bessemer & Lake Erie | 2 |
BN
| Burlington Northern | 25 |
BO
| Baltimore & Ohio | 17 |
BRC
| Belt Railway of Chicago | 16 |
CBQ
| Chicago Burlington & Quincy | 2 |
CC
| Chicago Central & Pacific | 2 |
CEI
| Chicago & Eastern Illinois | 2 |
CMNW
| Chicago Missouri & Western | 1 |
CNW
| Chicago & Northwestern | 22 |
CO
| Chesapeake & Ohio | 31 |
CP
| Canadian Pacific Railway | 3 |
CR
| Conrail | 55 |
CRIP
| Chicago Rock Island & Pacific | 21 |
CRL
| Chicago Rail Link | 1 |
CRR
| Clinchfield | 2 |
CS
| Colorado & Southern | 1 |
CSL
| Chicago Short Line Railway Company | 26 |
CSS
| Chicago South Shore And South Bend | 10 |
CSX
| CSX Railroad | 1 |
CWP
| Chicago West Pullman & Southern | 5 |
DH
| Delaware & Hudson | 3 |
DODX
| Department Of Defense | 2 |
DRGW
| Denver & Rio Grande Western | 8 |
EEC
| East Erie Commercial Railroad | 1 |
EJE
| Elgin Joliet and Eastern | 17 |
EL
| Erie Lackawanna | 14 |
GTW
| Grand Trunk Western | 26 |
IAIS
| Iowa Interstate | 4 |
IC
| Illinois Central | 2 |
ICG
| Illinois Central Gulf | 14 |
IHB
| Indiana Harbor Belt | 66 |
ISCX
| ISC Incorporated | 8 |
KCS
| Kansas City Southern | 2 |
LN
| Louisville & Nashville | 15 |
LSBC
| LSBC | 2 |
LV
| Lehigh Valley | 1 |
MEC
| Maine Central | 1 |
MGA
| Monongahela RR | 1 |
MILW
| Milwaukee Road | 9 |
MKT
| Missouri-Kansas-Texas | 1 |
MON
| Monon Route | 2 |
MP
| Missouri Pacific | 22 |
MTW
| Marinette Tomahawk & Western | 2 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 10 |
PC
| Penn Central | 6 |
PLE
| Pittsburgh & Lake Erie | 6 |
PS
| Pittsburg and Shawmut Railroad Company | 1 |
RCL
| RCL | 1 |
RSCX
| Republic Steel | 1 |
RSMX
| Reserve Mining | 1 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 3 |
SOO
| Soo Line | 17 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 3 |
TPW
| Toledo Peoria & Western | 5 |
TRRA
| Terminal RR of St Louis | 2 |
UP
| Union Pacific Railroad Company | 38 |
URR
| Union Railroad | 1 |
WICT
| Wisconsin & Calumet | 1 |
WM
| Western Maryland | 5 |