Railroad Archives Online
| Places term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Plumb Spur (Wash.) | 0 | 0 | |
| Plumb (Wash.) | 5 | 0 | |
| Plummer (Idaho) | 1 | 0 | |
| Pluvius (Wash.) | 2 | 0 | |
| Plymouth (Iowa) | 0 | 0 | |
| Plymouth (Wash.) | 14 | 0 | |
| Plymouth (Wis.) | 0 | 0 | |
| Pocahontas Spur (Wash.) | 0 | 0 | |
| Pocono (Idaho) | 0 | 0 | |
| Poe (Wash.) | 3 | 0 |