President Herbert Hoover and official party in Tunnel No. 2 during inspection tour of Boulder Canyon Project: Construction Engineer W. R. Young, Bureau of Reclamation; Mr. Ritchey, Secretary to the President; Chief Engineer R. F. Walter, Bureau of Reclamation; Lou Henry Hoover; President Hoover; Marguerite Blake Wilbur; Secretary of the Interior R. L. Wilbur; E. O. Wattis, First Vice-President, Six Companies, Inc.; F. T. Crowe, General Superintendent, Six Companies, Inc., 1932 November 12

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