1 | MMID | Maryland Midland Ry., Inc. | added 1/1984; 1/1994-7/2005 | | NAKINA |
2 | MMID | Maryland Midland Ry. Co. | added 1/1981; added 4/1981; eliminated 1/1984 | | NAKINA |
3 | MMID | Maryland Midland Ry., Inc. | added 1/81; added 4/81; 1/94-7/2000 | | NRHS |
4 | MMID | MARYLAND MIDLAND RAILWAY, INC. | | | PWRC |
5 | MMID | Maryland Midland Railway | | | RSRV |
6 | MMID | Maryland Midland | | USA | TRAFFIC |