The classic books on a timeless subject -- for a new generation.In 1975, Alona Frankel wrote and illustrated her first book, especially for her son Michael, on how to use the potty. Almost 50 years later, Once Upon a Potty - Boy and Once Upon a Potty - Girl are the classic books on potty training and have sold more than four million copies worldwide. These children's books help parents everywhere deal successfully with an often vexing challenge for the whole family.Thanks to their timeless words and beloved images, these books are being discovered and used by a new generation of parents. With their phenomenal staying power, they target and meet the needs of an obviously perpetual market.