. (1938) Boulder Canyon project.Denver, DOC.I27.21: . (1974) Expansion of Boulder Canyon project and facilitation of incorporation of Page, Ariz.hearing before the Subcommittee on Water and Power Resources of the Committee on Interior and Insular Affairs, United States Senate, Ninety-third Congress, second session, on S. 325 ... S. 767 ... S. 1261 ... June 12, 1974Washington : U.S. Govt. Print. Off., CIS 74 S441-63 . (1930) Specifications, schedule, and drawings.Hoover Dam, power plant and appurtenant works. Boulder canyon project. Arizona-California-Nevada ..[Washington, U.S. Govt. Print Off., CLOSTX.TC547.U61930