The second volume is packed with intriguing developments, as Schulz continues to create his tender and comic universe. It begins with Peanuts' third full year and a cast of eight: Charlie Brown, Shermy, Patty, Violet, Schroeder, Lucy, the recently-born Linus, and Snoopy. By the end of 1954, Pigpen and his dust cloud join the crowd. Linus, who still doesn't speak, begins to emerge as one of the most complex and endearing characters in the strip: garrulous...