R. Crumb is the leading cartoonist in the American "underground comix" movement. He is the creator of Mr. Natural, the iconic "Keep on Truckin" T-shirt image, and Fritz the Cat. His book The R. Crumb Handbook was a Booksense bestseller. He lives in France. Terry Zwigoff is the award-winning director of the documentary Crumb.Stephen Calt, the author of two acclaimed musical biographies, lives in New York City. David Jasen is the director of the Popular Music Archive at the C. W. Post Campus of Long Island University.