Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1914 - Klamath Project. Gladney & Adams Ready-Mix Concrete. Beams and hopper of cement scales. Andrew M. Bergloff, Photo. January 4, 1950", from Black Binders Digital reproduction of photograph: KP-1914 - Klamath Project. Gladney & Adams Ready-Mix Concrete, Black Binders, Bureau of Reclamation