Original photograph: 17 x 12 cm, black & white photo, with "A" and "KP" written in front in pencil, caption under photo reads "Clear Lake Dam - Upper trestle and earth fill, October 13, 1909", black curly mark lower left, white spots left center, lower right, from Bright Blue Album Digital reproduction of photograph: Clear Lake Dam - Upper trestle and earth fill, Bright Blue Album, Bureau of Reclamation
