This sports postcard price guide by J.L. Mashburn is a must-have for any collector or enthusiast. It provides a comprehensive reference for sports postcards. The guide is an original and comes from Colonial House Publishers. It is signed by the author and is a great addition to any collection. The guide is perfect for those interested in sports postcards and want to learn more about them. It covers a wide range of topics and is written in English. The binding is softcover and wraps. The publisher is Colonial House Publishers. The guide is an original and comes from the author himself. This item falls under the categories of Antiquarian & Collectible and Books & Magazines.