The "The Encyclopedia of Model Railways" by Terry Allen is a large hardcover textbook published in 1981 by Octopus Books. This vintage non-fiction book, intended for adults, provides a comprehensive guide to the world of model railways in the 1980s. With illustrated features and a focus on transportation, this English language publication offers a detailed look at railways and is a valuable resource for enthusiasts and collectors alike. Standing at 30cm in height, this book is a must-have for those interested in model railways and their history.