| 1. |  | First tressle after leaving Keystone on Old Hill City - Keystone Road (2) | Floods -- Black Hills (S.D. and Wyo.); Floods -- South Dakota -- Keystone (S.D.) | From back of photograph "The first tressle after leaving Keystone on the Old HIll City -Keystone Road. The clearance under t he tressle was 11 foot [sic] and after the flood it was it was completely filled".... |
