Long regarded as THE political touchstone cartoon of its era, Garry Trudeau’s Doonesbury celebrates its fortieth anniversary in this beautifully produced retrospective.​ This massive-yet-elegant celebratory anthology examines in-depth the characters that have given the strip such vitality.   On October 26, 1970, college jock B.D. met his inept and geeky roommate, Mike. Fourteen thousand strips later, the…