Railroad Archives Online
| Places term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Port Angeles (Wash.) | 2 | 0 | |
| Port Alberni (B.C.) | 2 | 0 | |
| Pori (Mich.) | 0 | 0 | |
| Poplin (Wash.) | 0 | 0 | |
| Popler (Wis.) | 0 | 0 | |
| Poplar (Mont.) | 132 | 0 | |
| Poorman (Idaho) | 0 | 0 | |
| Poorbraugh (Minn.) | 1 | 0 | |
| Pontis (S.D.) | 0 | 0 | |
| Pomroy (Minn.) | 3 | 0 |