Cold Cases in Avon, Iowa   Homicide Martha “Marty” D. Erickson 47 YOA Case # 95-13479 Avon, IA (Polk County) November 21, 1995 On Tuesday, November 21, 1995, Martha “Marty” Erickson, 47, was killed while on her way to a dance. Her body was found the following day in Avon Lake. Erickson died of a […]