From Crime Stoppers of Colombia/Boone County (Missouri) aka 875tips.com:
On July 21, 1982, the partially decomposed body of a white female was discovered on Williams Road, near the Riggs Quarry. The victim was identified as 22 year old Boone County resident Peggy Susanne Donath. Donath was last seen alive at her mobile home in the former Paddock Meadows trailer park on July 14, 1982. An autopsy was conducted and it was determined Ms. Donath was the victim of a homicide.
Anyone with information is urged to contact the Boone County Sheriff’s Department Detective Unit at 573-875-1111 or CrimeStoppers at 573-875-TIPS.