Railroad Archives Online
| Places term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Madison (S.D.) | 0 | 0 | |
| Madiera Mine (Minn.) | 0 | 0 | |
| Maderia Mine (Minn.) | 5 | 0 | |
| Maddock (N.D.) | 0 | 0 | |
| Macon (Mont.) | 23 | 0 | |
| Machias (Wash.) | 7 | 0 | |
| Mace Mine Spur (Minn.) | 1 | 0 | |
| Mace Mine Number 2 (Minn.) | 1 | 0 | |
| Mace Mine (Minn.) | 11 | 0 | |
| Macall, Washington | 1 | 0 |