When Wendell, Floyd, and Mona search through the lost-and-found bin, they are sucked into a deep cave filled with all kinds of lost items, including mummies and dinosaur bones. Will they ever find Mona's lucky hat and make it safely back to school? Full color.

Lost and Found 2001, Scholastic Paperbacks

ISBN-13: 9780439278690

Trade paperback

Lost and Found 1998, Scholastic Press, New York, NY

ISBN-13: 9780590846196