Jacob Franklin Mentzer III (born in 1950), is an American fantasy author and game designer best known for his work on early materials for the "Dungeons & Dragons" (D&D) fantasy role-playing game. He was a performing folk musician from 1968 to 1975, and played one concert at the White House during the administration of Richard Nixon. He has been closely involved with the world's largest game auction at the GenCon game convention since 1983, … Wikipedia
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