Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "Roll 2 No. 1 - Klamath Project. "A" Canal 2-inch gunite lining in vicinity of Sta. 462, showing bulging and disintegration. H. F. Tolley, Photographer. October 19, 1948", from Black Binders Digital reproduction of photograph: Roll 2 No. 1 - Klamath Project, Black Binders, Bureau of Reclamation