Original photograph: 16 x 12 cm, black & white photo, with "NA" and "KP" written in front in pencil, caption under photo reads "Clear Lake Dam - Clearing site of earth embankment, September 1, 1909", white thumbprint, upper right, from Bright Blue Album Digital reproduction of photograph: Clear Lake Dam - Clearing site of earth embankment, Bright Blue Album, Bureau of Reclamation