Railroad Archives Online
| Places term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Osborn (Mont.) | 0 | 0 | |
| Osayoos (B.C.) | 1 | 0 | |
| Osakis (Minn.) | 132 | 0 | |
| Orwood Spur (Or.) | 0 | 0 | |
| Orwell Mine (Minn.) | 1 | 0 | |
| Orville (Or.) | 30 | 0 | |
| Ortonville (Minn.) | 0 | 0 | |
| Ortonville (Iowa) | 0 | 0 | |
| Ortley (S.D.) | 0 | 0 | |
| Orting (Wash.) | 4 | 0 |