Original photograph: 13 x 18 cm, black & white photo, caption under photo reads "Roll 3 No. 4 - Klamath Project. "J" Canal concrete lining, showing plain joint spalling where it has not been marked with an edger. H. F. Tolley, Photographer. October 19, 1948", from Black Binders Digital reproduction of photograph: Roll 3 No. 4 - Klamath Project, Black Binders, Bureau of Reclamation