On October 2, 1950, Charles M. Schulz introduced a brand-new comic strip with an unlikely round-headed hero, “Good ol’ Charlie Brown.” PEANUTS was born. Soon, readers came to know and love a whole cast of indelible young characters: philosophical Linus and his crabby big sister Lucy; piano-playing Schroeder; attention-grabbing Sally; pals Franklin, Peppermint Patty, Marcie, Pigpen and his famous dust cloud. But no...