ANKX
| A and K Railroad Materials Incorporated | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
BNSF
| BNSF Railway | 3 |
CNW
| Chicago & Northwestern | 6 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 12 |
CSX
| CSX Railroad | 14 |
DGNO
| Dallas Garland & Northeastern | 1 |
DJJX
| Joseph Transportation Incorporated | 2 |
EL
| Erie Lackawanna | 2 |
GNBC
| Grainbelt Corporation | 17 |
GSSX
| Gopher State Scrap and Metal | 1 |
IC
| Illinois Central | 10 |
ICE
| Iowa Chicago and Eastern | 1 |
MP
| Missouri Pacific | 4 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 2 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 5 |
SKRX
| Schuylkill Railcar L.P. | 1 |
SMIX
| Structural Metals Incorporated | 1 |
SP
| Southern Pacific | 4 |
SPSX
| Progress Rail Services Corp | 7 |
UCRY
| Utah Central | 1 |