AC
| Algoma Central | 1 |
BLE
| Bessemer & Lake Erie | 1 |
CBQ
| Chicago Burlington & Quincy | 1 |
CIC
| Cedar Rapids & Iowa City | 2 |
CNW
| Chicago & Northwestern | 1 |
CRIP
| Chicago Rock Island & Pacific | 4 |
CW
| Colorado and Wyoming | 1 |
DJJX
| Joseph Transportation Incorporated | 1 |
DRGW
| Denver & Rio Grande Western | 5 |
DSSA
| Duluth, South Shore & Atlantic | 1 |
DTI
| Detroit Toledo & Ironton | 1 |
EJE
| Elgin Joliet and Eastern | 2 |
GA
| Georgia Railroad | 1 |
IATR
| Iowa Traction Railroad Company | 1 |
ITC
| Illinois Terminal Railroad | 1 |
LN
| Louisville & Nashville | 1 |
LT
| Lake Terminal Railroad Company | 1 |
LV
| Lehigh Valley | 1 |
MILW
| Milwaukee Road | 3 |
MKT
| Missouri-Kansas-Texas | 1 |
MON
| Monon Route | 1 |
MP
| Missouri Pacific | 3 |
NKP
| Nickel Plate | 2 |
NP
| Northern Pacific | 1 |
NSS
| Newburgh and South Shore Ry. Co. | 1 |
NYC
| New York Central | 1 |
OTDX
| Greenbrier Leasing Corporation | 1 |
PC
| Penn Central | 1 |
PLE
| Pittsburgh & Lake Erie | 1 |
PRR
| Pennsylvania Railroad | 2 |
RDG
| Reading Railroad | 2 |
RRRR
| Rock and Rail Incorporated | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
WM
| Western Maryland | 1 |