H
| Hamilton | Hilger |
| Hardin | Hingham |
| Harlem | Hinsdale |
| Harlowton | Hobson |
| Hartford | Hogeland |
| Havre | Hot Springs |
| Hedgesville | Huntley |
| Helena | Hysham |
| Montana Historical Society Research Center |
| 225 North Roberts, P.O. Box 201201, Helena, MT 59620-1201, 406-444-2681, 406-444-2696 (fax). |
| mhslibrary@mt.gov |