May 30, 2023 Earl Swift- "The Big Roads: The Untold Story of the Engineers, Visionaries and Trailblazers who created the American Superhighways." Audio Player Your browser does not support the audio element. 00:0000:0000:00Use Up/Down Arrow keys to increase or decrease volume. Morning Show - 05/30/23 https://www.facebook.com/wgtdfm/(link is external)