Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "Roll 3 No. 6 - Klamath Project. "A" Canal Headworks from downstream side. H. F. Tolley, Photographer. October 20, 1948", from Black Binders Digital reproduction of photograph: Roll 3 No. 6 - Klamath Project, Black Binders, Bureau of Reclamation