Paul Grushkin is the author of The Art of Rock, the standard work in the field of rock posters, and its bestselling followup, Art of Modern Rock. He is the author of several other books in the field of rock history and memorabilia, including Grateful Dead: The Official Book of the Deadheads and Treasures of the Hard Rock Cafe. A former archivist for promoter Bill Graham, he has more than two decades' experience at the forefront of rock merchandising, having mounted campaigns for top acts and created his own Phantom clothing line.