A view looking down the hallway of Boulder Dam's visitor gallery. Boulder Dam was officially renamed Hoover Dam in 1947.

An image of President Roosevelt in his car en route to the dedication of Boulder Dam (officially renamed Hoover Dam in 1947).

An image of Boulder City Rotary Club members sitting at a table at a luncheon held near Boulder Dam (officially renamed Hoover Dam in 1947).

A black and white image of several unidentified men and women associated with the Rotary Club attending the Boulder Dam decennial (officially renamed Hoover Dam in 1947).

A black and white image of unidentified people posing for a group photograph on top of the Boulder Dam powerhouse (officially renamed Hoover Dam in 1947).

A black and white image of Boulder Dam's Winged Figures of the Republic statues with a dedication plaque in between; two unidentified people are walking in front of the structure. Boulder Dam was officially renamed Hoover Dam in 1947.

An image of Lakeview Point at Lake Mead. A lone car sits in the parking grounds of the point while power lines stretching from Hoover Dam cross the scene in the background.