| 21. |  | Old Hill City - Keystone Road | Floods -- Black Hills (S.D. and Wyo.); Floods -- South Dakota -- Keystone (S.D.) | From back of photograph "On Old Hill City - Keystone Road just past the tressle at Camp Judson. A two foot Culvert usually handled water that flowed under this rockbed that held the railroad tracks. Notice... |
