An image of the Winged Figures of the Republic statues and dedication plaque at Hoover Dam.

An image of the Boulder Dam Power Decennial plaque, which was made for the ten year anniversary of Boulder Dam, renamed Hoover Dam in 1947. Depicted on the sign is an outline of the downstream face of the Hoover Dam, along with outlines of the state seals of Arizona, California, Colorado, Nevada, New Mexico, Utah, and Wyoming. Transcribed from text across the sign: "Boulder Dam, Power Decennial. Flood Control - Irrigation - Power. Saluting Boulder Dam On Its Tenth Year Of Commercial Power Production. 1936-1946. Honoring The People Of The Colorado River Basin States. Whose initiative brought forth Boulder Dam, making possible: The maximum utilization of the water resources of this great river system; The prevention of floods; The conservation of water; The availability of hydroelectric energy to a wide area."

An image of film crews and photographers at Boulder Dam on the day it was dedicated by President Franklin Delano Roosevelt. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

An image of a film crew shooting penstock valves while they were open for the Boulder Dam dedication. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

An image of the memorial plaque after it was unveiled at Boulder Dam. Spectators of the event gathered beneath the plaque commemorating the 96 men who had died during the construction of the dam. Transcribed across the center of the plaque: "They died to make the desert bloom." Note: Boulder Dam was officially renamed Hoover Dam in 1947.

An image of the inscribed flagpole base located between the Winged Figures of the Republic sculptures at Boulder Dam. The base is engraved with a memorial inscription regarding the construction of the dam: "It is fitting that the flag of our country should fly here in honor of those men who, inspired by a vision of lonely lands made fruitful, conceived this great work and those others whose genius and labor made that vision a reality." Note: Boulder Dam was officially renamed Hoover Dam in 1947.

An image of Dr. Elwood Mead's dedication plaque at Lakeview Point, overlooking Lake Mead from the outskirts of the reservoir. Scattered along the surrounding rocky terrain are Joshua trees and other shrubs.