Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1520-R2 - Klamath Project. Spreading earth layer for compaction by carryall on M-2-a-2 Lateral, Coppock Bay. D. H. Gross, Photographer. August 14, 1947", from Black Binders Digital reproduction of photograph: KP-1520-R2 - Klamath Project, Black Binders, Bureau of Reclamation