July 19 – 21, 1974. The worst rock festival ever. Music was fabulous but the organizers were amateurs. 50,000 were expected and over 160,00 showed up. Portable toilets were backed up, it rained and turned everything to mud. Nearby farmers lost cattle and hogs (hippies gotta eat) and someone had the brilliant idea of sending helicopters in to spread lime — apparently to fend off disease.
The whole event prompted the Sedalia City Council to ban any and all future rock concerts in perpetuity.