An image of President Franklin D. Roosevelt giving a speech to a crowd at the Boulder Dam dedication ceremony (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).

An image of Rotary Club members attending a lunch near Boulde Dam (officially renamed Hoover Dam in 1947). Three unidentified men stand beside each other eating food and wearing chef hats.

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).

An image of Lakeview Point at Lake Mead with visitors looking at the waters before them.

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.

The view of the Fortification Hill area of Lake Mead as a visiting boat zips across the lake's surface. Two women dressed in their bathing suits playfully wave to the camera from the deck of the boat, as other visitors aid in directing the boat's path. Transcribed on the side of the boat: "27-J-154."