Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1441-R2 - Klamath Project. Region II. Boundary Dam Materials Investigation. Material in BT-15, Borrow Area "D". Dorwin Grise, Photo. April 23, 1947", from Black Binders Digital reproduction of photograph: KP-1441-R2 - Klamath Project. Region II. Boundary Dam Materials Investigation, Black Binders, Bureau of Reclamation