Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1431-R2 - Klamath Project. Region II. Construction Materials Investigation. Gladney and Adams Gravel Plant. Screens and washer. Dorwin Grise, Photo. March 11, 1947", from Black Binders Digital reproduction of photograph: KP-1431-R2 - Klamath Project. Region II, Black Binders, Bureau of Reclamation