Underground comic book artist Robert Crumb created ZAP COMIX and is the artist behind such 1960s and 1970s icons as Mr. Natural, Fritz the Cat, and Keep-on-Truckin. His wife, Aline Kominsky Crumb, was one of the earliest underground female cartoonists. Her new book, Need More Love: A Graphic Memoir, chronicles her life and career. Robert's new book is The Sweeter Side of R. Crumb.