Railroad Archives Online
| Places term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Oso (Wash.) | 61 | 0 | |
| Osnabrook (N.D.) | 4 | 0 | |
| Osnabrock (N.D.) | 42 | 0 | |
| Osnabock (N.D.) | 5 | 0 | |
| Osmond (Neb.) | 12 | 0 | |
| Oshkosk (Wis.) | 0 | 0 | |
| Osgood (N.D.) | 0 | 0 | |
| Osgood (Mo.) | 0 | 0 | |
| Osceola (Wis.) | 0 | 0 | |
| Osceola (S.D.) | 67 | 0 |