ATSF
| Atchison Topeka & Santa Fe | 2 |
BN
| Burlington Northern | 1 |
DRGW
| Denver & Rio Grande Western | 1 |
FWWR
| Fort Worth and Western | 1 |
HLMX
| Helm Financial Corporation | 1 |
HZGX
| Herzog Contracting Corporation | 2 |
KCS
| Kansas City Southern | 2 |
UP
| Union Pacific Railroad Company | 1 |