Elna Maria “Valerie” Peterson Homicide Elna Maria “Valerie” Peterson 8 YOA Manson, IA Calhoun County May 6, 1971   Case Summary by Jody Ewing   On Thursday, May 6, 1971, 8-year-old Valerie Peterson was killed by a hit-and-run driver around 4 p.m. while riding her bicycle off the side of the road in front of […]