Original photograph: 13 x 9 cm, black & white photo, caption under photo reads “P-12-200-3037NA Klamath Project - Oregon-California Clear Lake Spillway Rehabilitation - Specs. 200C-889 - Roy D. Garren Corporation, Contractor View of left protective slab under bridge. July 1974 USBR photo by D. W. Stein", from Black Binders Digital reproduction of photograph: P-12-200-3037NA Klamath Project - Oregon-California, Black Binders, Bureau of Reclamation
