Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1890 - Klamath Project. Lower cost canal lining. Laying of asphalt with paper side up. (Close-up). Andrew M. Bergloff, Photo. December 8, 1949", from Black Binders Digital reproduction of photograph: KP-1890 - Klamath Project. Lower cost canal lining. Laying of asphalt with paper side up. (Close-up), Black Binders, Bureau of Reclamation
