Book excerpt: In The Art Prophets, Richard Polsky introduces us to influential late twentieth-century dealers and tastemakers in the art world. These risk takers opened doors for artists, identified new movements, and resurrected art forms that had fallen into obscurity. In this distinctive tour, Polsky offers an insightful and engaging dialog between artists and the visionaries who paved their way. Table of contents Ivan Karp and Pop Art Stan Lee and Comic Book Art Chet Helms, Bill Graham, and the Art of the Poster John Ollman and Outsider Art Joshua Baer and Native American Art Virginia Dwan and Earthworks Tod Volpe and Ceramics Jeffrey Fraenkel and Photography Louis Meisel and Photorealism Tony Shafrazi and Street Art