Original photograph: 7 x 12 cm, black & white photo, with "NA" written in front in pencil, caption under photo reads "Clear Lake Dam - Steel reinforcement, bottom of gate tower, August 1, 1909", black triangle along right border, white mark lower center (slightly to right), from Bright Blue Album Digital reproduction of photograph: Clear Lake Dam - Steel reinforcement, bottom of gate tower, Bright Blue Album, Bureau of Reclamation
