Letters to the Happy Camper is the care package that fits in a book — a collection of ready-to-send letters, stories, and little surprises that parents, grandparents, siblings, and friends can fill out and send to their favorite camper whenever they need a smile. Part activity, part keepsake, part “we miss you but you’re having the time of your life.” Part of a series with more than 2.4 million copies sold.