Railroad Archives Online
| Places term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Polson Camp (Wash.) | 3 | 0 | |
| Polson (Mont.) | 11 | 0 | |
| Pomona (Wash.) | 8 | 0 | |
| Pompano Beach (Fla.) | 4 | 0 | |
| Pompey's Pillar (Mont.) | 0 | 0 | |
| Pomroy (Minn.) | 3 | 0 | |
| Pontis (S.D.) | 0 | 0 | |
| Poorbraugh (Minn.) | 1 | 0 | |
| Poorman (Idaho) | 0 | 0 | |
| Poplar (Mont.) | 132 | 0 |