Most other game shows from that era were not so fortunate. All of the Bob Stewart (except "Pyramid"), Heatter–Quigley except for "PDQ" which aired in syndication as well as many episodes of "Hollywood Squares", Hatos–Hall (except for a large portion of "Let's Make a Deal"), Ralph Andrews, Carruthers Company (except for "Press Your Luck"), the pre-scandal Barry & Enright, Jack Barry (except for "The Joker's Wild"), Ralph Edwards and pre-1980 Merv Griffin (which includes most of the Art Fleming version of Jeopardy and the Chuck Woolery version of Wheel of Fortune) have been destroyed, with the exception of a few rare pilots and "cast aside" episodes. The few remaining episodes have therefore become collectors' items, and an active tape trading circuit exists among collectors.