John D. Rockefeller (2015). “John D. Rockefeller on Making Money: Advice and Words of Wisdom on Building and Sharing Wealth”, p.25, Skyhorse Publishing, Inc.
More Than Somewhat (1937). This quotation is associated with Runyon, but the Chicago Tribune, 10 May 1936, printed the following: "'The race is not always to the swift, nor the battle to the strong, but that is the way to bet,' as Hugh Keough used to say." Keough was a Chicago journalist.