Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1912 - Klamath Project. Front view of Gladney & Adams Company. Concrete mixing vat shown in background to the left. Andrew M. Bergloff, Photo. January 4, 1950", white substance in the upper left corner of photo, from Black Binders Digital reproduction of photograph: KP-1912 - Klamath Project. Front view of Gladney & Adams Company, Black Binders, Bureau of Reclamation
