ATSF
| Atchison Topeka & Santa Fe | 93 |
BLE
| Bessemer & Lake Erie | 2 |
BN
| Burlington Northern | 9 |
BNSF
| BNSF Railway | 2 |
BO
| Baltimore & Ohio | 16 |
BRC
| Belt Railway of Chicago | 19 |
CBQ
| Chicago Burlington & Quincy | 4 |
CNW
| Chicago & Northwestern | 43 |
CO
| Chesapeake & Ohio | 1 |
CR
| Conrail | 9 |
CRIP
| Chicago Rock Island & Pacific | 4 |
CSL
| Chicago Short Line Railway Company | 4 |
CSS
| Chicago South Shore And South Bend | 1 |
CWP
| Chicago West Pullman & Southern | 1 |
DRGW
| Denver & Rio Grande Western | 2 |
DRIN
| DRIN | 3 |
EJE
| Elgin Joliet and Eastern | 45 |
EL
| Erie Lackawanna | 2 |
FRVR
| Fox River Valley Railroad | 1 |
GBW
| Green Bay & Western | 16 |
GMO
| Gulf Mobile & Ohio | 1 |
GTW
| Grand Trunk Western | 9 |
IAIS
| Iowa Interstate | 5 |
IC
| Illinois Central | 4 |
ICG
| Illinois Central Gulf | 4 |
IHB
| Indiana Harbor Belt | 31 |
ISCX
| ISC Incorporated | 2 |
ITC
| Illinois Terminal Railroad | 1 |
JJRR
| J and J Railroad | 2 |
KBSR
| Kankakee Beaverville and Southern Railroad Company | 2 |
LN
| Louisville & Nashville | 3 |
LSI
| Lake Superior and Ishpeming Railroad | 1 |
MAMX
| Mammoet USA, Inc | 1 |
MILW
| Milwaukee Road | 24 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 7 |
NKP
| Nickel Plate | 2 |
NW
| Norfolk & Western | 8 |
PLE
| Pittsburgh & Lake Erie | 2 |
SOO
| Soo Line | 31 |
SP
| Southern Pacific | 1 |
TPW
| Toledo Peoria & Western | 5 |
UP
| Union Pacific Railroad Company | 4 |
WAB
| Wabash | 2 |
WM
| Western Maryland | 1 |
WP
| Western Pacific | 1 |