Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1514-R2 - Klamath Project. Type "C" earth lining test section under construction on M-2-a-2 Lateral. Dorwin Grise, photographer. July 25, 1947", from Black Binders Digital reproduction of photograph: KP-1514-R2 - Klamath Project, Black Binders, Bureau of Reclamation