KP-1535-R2 - Klamath Project. Six-inch slide and folding rules used for comparison; August 29, 1947; Photo by Dorwin Grise; The slide-rule case bears the photographer's last name and initials: "D.E.Grise"
Title
Shrinkage cracks in undisturbed soil, Coppock Bay, California
Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1535-R2 - Klamath Project. Coppock Bay. Shrinkage cracks in undisturbed soil. Six-inch slide and folding rules used for comparison. Dorwin Grise, Photo. August 29, 1947", from Black Binders Digital reproduction of photograph: KP-1535-R2 - Klamath Project, Black Binders, Bureau of Reclamation
