Herbert Clark Hoover (10 August 10 1874 - 20 October 1964), the 31st President of the United States (1929-1933), was a successful mining engineer, the people's icon, and administrator. He showed the Efficiency Movement component of the Progressive Era, arg
Herbert Clark Hoover (10 August 10 1874 - 20 October 1964), the 31st President of the United States (1929-1933), was a successful mining engineer, the...
