| 1. |  | High altitude aerial photograph over Heart River flooding in Township 139N, Range 82W, Sections 24 & 25, Morton County, N.D. | Aerial photographs; Floods; Rivers; Railroad tracks; Railroad bridges; | High altitude aerial photograph showing Heart River during flood stage in Township 139N, Range 82W, Sections 24 & 25, Morton County, N.D. The Northern Pacific Railroad tracks are visible running through... |
