Polk County in Iowa   Altoona in Polk County Gregory Neal Dickey Homicide Gregory Neal Dickey 23 YOA Interstate 80 eastbound on-ramp Altoona, IA Polk County Case # 75-00248 February 18, 1975 Case summary by Jody Ewing On February 18, 1975, Iowa State Trooper Charles Black discovered a 1966 green Ford van on Interstate 80 […]