Colorado River; Black Canyon before Dam construction. This is the signal man for one of the hi-lines. He could see the whole scene. He signaled operator what to do. Note on back: "Man is standing on the observation point constructed by Six Companies. Location of Ma Kennedy's wedding was on the observation point. - W. A. Davis."
Looking upstream before the cofferdams were in; Nevada side on left. Note work boat on Arizona side, carrying dynamite batteries from above dam to dam site. Note on back: "All the blasting Wint observed used a generator, not batteries. Later the power was provided by permanent lines. - James J. Hester, son-in-law of W. A. "Wint" Davis, photog."
Before completion of cofferdam on Colorado River. Canyon showing start of fill for cofferdam. Oct 3, 1932. Note on back: ""Crowding river over prior to installation of Coffer Dam. Then diverted river through diversion tunnels. - W. A. Davis.""
Cofferdam (upper one), 1/4 - 1/2 mile upstream from Dam site. Dec. 25, 1932. Note on back: ""Electric Marion steam shovel on top of cofferdam. May have used shovel to lay down metal grating. - W. A. Davis.""