Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1778-R2. Klamath Project. Pumping Plant "D". Full view of the concrete pouring on the top lift of the tunnel portal structure. Taken from side of hill. M. D. Taylor, Photo. (telephoto lens) March 31, 1949", from Black Binders Digital reproduction of photograph: KP-1778-R2. Klamath Project. Pumping Plant "D", Black Binders, Bureau of Reclamation