The Knoxville Historic Preservation Commission is hosting a program on June 25, by historian Larry Ball, Jr., on “The History of the Des Moines Speedway, 1915-16, and its Connection to the National Sprint Car Hall of Fame.”  That’s according to committee co-chair Tom Schmeh.  He says the presentation will be held from 7 until 8 p.m. in the Knoxville Public Library.