Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1933 - Klamath Project. Picture of measuring weir at outlet end of tunnel from Pumping Plant "D". Telephoto. Andrew M. Bergloff, Photo. March 29, 1950", from Black Binders Digital reproduction of photograph: KP-1933 - Klamath Project. Picture of measuring weir at outlet end of tunnel from Pumping Plant "D", Black Binders, Bureau of Reclamation