| A&BR | - | Arcadia and Betsey River |
| AARR | - | Ann Arbor Railroad |
| AM | - | Alabama Midland |
| B&O | - | Baltimore & Ohio Railroad Co. |
| C&BI | - | Calumet and Blue Island |
| C&O | - | Chesapeake & Ohio RR |
| D&TSL | - | Detroit and Toledo Shore Line |
| DL&C | - | Dayton, Lebanon and Cincinnati |
| DT&I | - | Detroit, Toledo and Ironton |
| EJ&E | - | Elgin, Joliet and Eastern |
| KC&NW | - | Kelly's Creek and Northwestern |
| KCS | - | Kansas City Southern |
| LS&I | - | Lake Superior & Ishpeming |
| Lun_N | - | Lundington Northern |
| LV | - | Lehigh Valley |
| M&LS | - | Manistique and Lake Superior |
| MI INST | - | Michigan Interstate |
| T&AA | - | Toledo and Ann Arbor |
| TAA&NM | - | Toledo, Ann Arbor and Northern Michigan |
| TAAGT | - | Toledo, Ann Arbor and Grand Trunk |
| W&LE | - | Wheeling and Lake Erie |
