Railroad Archives Online
| Places term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Ossian (Iowa) | 0 | 0 | |
| Osterdock (Iowa) | 0 | 0 | |
| Ostrander (Wash.) | 7 | 0 | |
| Oswego (Mont.) | 71 | 0 | |
| Oswego (N.D.) | 0 | 0 | |
| Othello (Wash.) | 46 | 0 | |
| Otis Orchards (Wash.) | 3 | 0 | |
| Otis (Wis.) | 0 | 0 | |
| Otranto (Iowa) | 0 | 0 | |
| Otter (B.C.) | 37 | 0 |