Railroad Archives Online
| Places term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Iowa (410) | 24 | 0 | |
| Ipswich (S.D.) | 0 | 0 | |
| Irby (Wash.) | 79 | 0 | |
| Irene (S.D.) | 80 | 0 | |
| Iris (Mont.) | 0 | 0 | |
| Irma (Wis.) | 0 | 0 | |
| Iron (Mont.) | 16 | 0 | |
| Iron Mountain (Mich.) | 0 | 0 | |
| Iron Ridge (Wis.) | 0 | 0 | |
| Iron River (Mich.) | 0 | 0 |