In his article, “Flying Machines and War Bonds: The Victory Loan Flying Circus in South Dakota,” Alan L. Roesler documents the South Dakota performances of a military aircraft demonstration team that toured the Midwest to promote the sale of bonds to finance World War I. The air shows entertained large crowds in Aberdeen, Redfield and Sioux Falls in April 1919. Roesler, a retired geologist in Mesa, Ariz., is a member of the League of World War I Aviation Historians.