Original photograph: 13 x 10 cm, black & white photo, caption under photo reads “P-12-200-4199NA Klamath Project - Oregon-California Klamath Straits Drain Enlargement, Lower Klamath Lake Division, Specs. 200C-922 - Patterson Constr. Co., Contractor View of abutment upstream of bridge showing riprap in place. June 1976 USBR photo by D. W. Stein", from Black Binders Digital reproduction of photograph: P-12-200-4199NA Klamath Project - Oregon-California, Black Binders, Bureau of Reclamation
