Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1527-R2 - Klamath Project. Boundary Dam, Basalt outcrop near axis of dam, N9, 980, E 4, 350. D. Gross, Photographer. August 20, 1947", from Black Binders Digital reproduction of photograph: KP-1527-R2 - Klamath Project, Black Binders, Bureau of Reclamation