Black and white image of President Roosevelt, his aide Harold Ickes, and Senator Key Pittman at Hoover Dam's dedication. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of a crowd of people gathered together for the Boulder Junction, a ceremony celebrating the beginning of work on Boulder Canyon Project and the beginning of construction on a Union Pacific Railroad from Boulder Junction (Bracken Junction) to the dam site. Note: Boulder Dam was officially renamed Hoover Dam in 1947.