This vintage 1962 Trixie Belden and the Happy Valley Mystery is a hardcover book written by Kathryn Kenny and published by Trixie Belden. It falls under the categories of Books & Magazines and Antiquarian & Collectible. The book is a classic topic that will surely be enjoyed by readers who love mystery and adventure. The author, Kathryn Kenny, is an expert in creating engaging stories that will keep readers on the edge of their seats. The publisher, Trixie Belden, is well-known for printing high-quality books that are both entertaining and informative. This book is a must-have for collectors and enthusiasts alike.