Herbert Hoover Quotes about Progress

United States. President (1929-1933 : Hoover), Herbert Hoover (1974). “Herbert Hoover: Containing the Public Messages, Speeches, and Statements of the President”
Herbert Hoover (1929). “The New Day: Campaign Speeches of Herbert Hoover, 1928”, p.30, Stanford University Press
"The New Day: Campaign Speeches of Herbert Hoover". Book by Herbert Hoover, 1929.
The slogan of progress is changing from the full dinner pail to the full garage.
Campaign speech, New York, N.Y., 22 Oct. 1928.
United States. President (1929-1933 : Hoover), Herbert Hoover (1974). “Herbert Hoover: Containing the Public Messages, Speeches, and Statements of the President”