Plop! — DC Comics, National Periodical Publications
Issue: #4
Contains:Welcome to the Plop Monster ConventionNow and Then Prison PlopsA Perfectly Crazy CrimePlop DropPrescription PlopsMonster PlopsHistorical PlopsThe Last Laugh The hosts are invited to a monster convention, where they must tell amusing stories to the assembled monsters... or else!
Creators: Paul Levitz, Frank Robbins, Mary Skrenes, Basil Wolverton, Sergio Aragonés, Nick Cardy, Joe Orlando, Steve Skeates