ATSF
| Atchison Topeka & Santa Fe | 2 |
BN
| Burlington Northern | 4 |
CNW
| Chicago & Northwestern | 1 |
CRIP
| Chicago Rock Island & Pacific | 1 |
CWW
| CWW | 1 |
DRGW
| Denver & Rio Grande Western | 3 |
GREX
| Georgetown Rail Equipment Company | 1 |
HZGX
| Herzog Contracting Corporation | 1 |
IC
| Illinois Central | 1 |
MILW
| Milwaukee Road | 1 |
RKCX
| Knox Kershaw Incorporated | 2 |
SP
| Southern Pacific | 1 |
SPMW
| Southern Pacific Maintenance of Way | 2 |
SVRR
| Shamokin Valley Railroad Company | 1 |
UP
| Union Pacific Railroad Company | 5 |