Calvin Coolidge Quotes about Progress

Calvin Coolidge (2001). “The Quotable Calvin Coolidge: Sensible Words for a New Century”, Images from the Past Incorporated
Calvin Coolidge (1924). “Message of the President of the United States to the Congress at the Beginning of the Second Session of the Sixty-eighth Congress, December 3 1924”
Speech in New York, 27 Nov. 1920, in New York Times 28 Nov. 1920, p. 20