ATSF
| Atchison Topeka & Santa Fe | 7 |
BN
| Burlington Northern | 8 |
BRC
| Belt Railway of Chicago | 27 |
CBQ
| Chicago Burlington & Quincy | 64 |
CGW
| Chicago Great Western | 46 |
CIM
| Chicago And Illinois Midland | 9 |
CNSM
| CHICAGO NORTH SHORE & MILWAUKEE RWY | 8 |
CNW
| Chicago & Northwestern | 19 |
CRIP
| Chicago Rock Island & Pacific | 13 |
CS
| Colorado & Southern | 3 |
DRGW
| Denver & Rio Grande Western | 2 |
EJE
| Elgin Joliet and Eastern | 6 |
GMO
| Gulf Mobile & Ohio | 2 |
GN
| Great Northern | 2 |
GTW
| Grand Trunk Western | 1 |
IC
| Illinois Central | 21 |
ICG
| Illinois Central Gulf | 40 |
ITC
| Illinois Terminal Railroad | 3 |
METX
| METRA | 2 |
MILW
| Milwaukee Road | 57 |
MP
| Missouri Pacific | 12 |
NP
| Northern Pacific | 2 |
NW
| Norfolk & Western | 3 |
PRR
| Pennsylvania Railroad | 15 |
RGS
| Rio Grande Southern | 1 |
SOO
| Soo Line | 22 |
SP
| Southern Pacific | 2 |
UP
| Union Pacific Railroad Company | 46 |
WAB
| Wabash | 5 |