Donald Rettler awaiting the 1972 Frontier Days parade on main street. December 19, 2011 Views: 2223 1 2 3 4 5 (0) Votes Return to the gallery Description: Donald Rettler awaiting the 1972 Frontier Days parade on main street. Donald is in front of Bongard's/Bernie Hanson's implement on Main (west 78th street).