HE
| Hollis and Eastern Railroad Company | 1 |
HLSC
| Hampton Railway Incorporated | 1 |
NS
| Norfolk Southern | 1 |
SERA
| Sierra Northern Railway | 1 |
SOO
| Soo Line | 1 |
SRY
| Southern Railway of British Columbia Lim | 1 |
TTZX
| TTX Company-Centerbeam Flats | 2 |
WCRC
| Washington Central | 1 |