The O.S. Nock Pocket Encyclopedia of British Steam Railways is a collectable book that delves into the fascinating world of British steam railways. Packed with detailed information and images, this book is a must-have for railway enthusiasts and collectors. With a focus on railwayana, this book provides a comprehensive look at the history and operations of British steam railways, making it a valuable addition to any transport collectables library. Perfect for those interested in the golden age of steam travel, this pocket encyclopedia is a treasure trove of information and nostalgia.