Author Mark Hunnibell called into the show on June 4, 2019, to talk about his book "Across America By Motorcycle." Mark told us of his upcoming recreation of a cross-country motorcycle trip made famous in 1919 by Charles Kenilworth ("C.K.") Shepherd--a veteran of World War I and former British Royal Air Force Captain. Mark Hunnibell--a former United States Air Force Captain--discovered Shepherd's book while beginning to restore his own "basket case" 1919 Henderson motorcycle that his father had given him decades earlier.