Black and white image of Hoover Dam with the following printed description: "View looking upstream in the Nevada turbine gallery. The runner for turbine N-2 has been placed and the wicket gates are about to be set." Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the Arizona-side generator room at Hoover Dam, as seen from the balcony at elevation 705. The 40,000 kilowatt ampere generator installed in unit 48 is visible in the background. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of Hoover Dam with the following printed description: "Looking upstream through Nevada spillway. Overflow weir under construction at right, completed section of channel lining and parapet at left." Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of Hoover Dam with the following printed description: "View of 50-foot diameter tunnel below Arizona Tunnel Plug outlet works with Stoney Gate at end of tunnel lowered." Note: Boulder Dam was officially renamed Hoover Dam in 1947.
View of businesses on Arizona Street in downtown Boulder City, taken from the corner of Nevada Highway and Arizona Street, looking east. Shell Service Station, Visitors Bureau, Boulder Theatre, Nava-Hopi Trading Post are seen. The front of the Boulder Dam Hotel is seen immediately east of the Nava-Hopi Store. Automobiles are in the street and parked in front of shops.
Hoover Dam construction by Bureau of Reclamation, Boulder City, Nevada on postcard. Inscription on back: 'In Flight With United Air Lines. Mighty Boulder Dam and its vast lake are impressive sights for air travelers flying from New York, Chicago, and other cities to Los Angeles via United Air Lines."" (no handwriting or address on post card).
'Cartography by W. C. Kainsinger, W.T. Taylor. Field mapping by K. R. Reed, G. Boyd. Typography by W. R. Williams.' 'Copyright by Automobile Club of Southern California. C-21351.' 'C-1352'--Panel. Index on verso. In lower right corner: 'Map number 1959.' Scale 1:415,210 (W 116°--W 114°/N 37°--N 35°). Relief shown by hachures and spot heights. Shows mines, ranches and springs. Not the same as the 1948 edition of this map. Cartographers', field mappers', typographers' names are different, and 2 out of 3 numbers on maps are different. Probably after 1947 as Boulder Dam has been changed to Hoover Dam, but before 1950 as Las Vegas Bombing and Gunnery Range has not been changed to Nellis Air Force Base. Automobile Club of Southern California.
Black and white image of boats used to transport men, powder, and supplies up and down the Colorado River in Black Canyon during the construction phase of the Boulder Canyon Project, better known as Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of a mud deposit at Hoover Dam. This site can be seen at mile 257, and a member of the survey crew displays a representative sample of one of the mud cubes formed to show the depth of the crevices. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of "Big Bertha," the Six Companies, Inc. motor transport used to haul workmen between Boulder City and Hoover Dam. This double-decker truck could haul 154 men. Note: Boulder Dam was officially renamed Hoover Dam in 1947.