Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1857 - Klamath Project. N-16 Lateral. Excavation for prefabricated asphalt buried membrane lining, Sta. 80. Andrew M. Bergloff, Photo. November 15, 1949", from Black Binders Digital reproduction of photograph: KP-1857 - Klamath Project. N-16 Lateral, Black Binders, Bureau of Reclamation