Dams -- Black Hills National Forest (S.D. and Wyo.);
Caption: "Log splash dam constructed across Spring Creek by Mr. Jacobson owner of the Strato Bowl property. The dam was built to provide crossing of Spring Creek and to enlarge the swimming pool area."
Fire lookout stations -- South Dakota -- Harney Peak;
Caption: "Harney Peak Lookout Tower pumphouse resevoir and dam. Located in vicinity of Custer, South Dakota. Photograph by U.S.F.S. 1980-Howard K Watts. Negative located at Black Hills National Forest, Supervisor's Office, Custer, SD. View to the...