When Brian Walker first interviewed Garry Trudeau in 1973, it was for an article on the new comix for the alternative weekly, Silver Lining. While Trudeau denied being a spokesman for the counterculture, it became a label that he had difficulty shaking. Walker later curated the first exhibition of Trudeau’s work. DOONESBURY AND THE ART OF G.B. TRUDEAU (Yale Univ., $49.95) explores the evolution of the artist from his prep-school drawing to Bull Notes, the predecessor of Doonesbury, and the impact the series has had on pop culture, from the Broadway musical to ties and Starbucks mugs. Walker also introduces the collaborators Trudeau has worked with over the years. There are plenty of strips here as well, from those early days to the present. It’s a lovely companion to 40: A DOONESBURY RETROSPECTIVE (Andrews McMeel, $100), which contains 1,800 strips Trudeau selected as representative of the 40 years since Gonzo, Mike, J.J. B.D., and the huge cast of characters first appeared in papers nationwide. He also provides bios of these iconic characters—all contained in a beautiful slip-cased box.