Each volume in this new series will include 40 maps updated and revised from Colonel Cobb's originals. The maps show the railway network in terms of those lines still open, those open for freight traffic only, lines which have been preserved and those closed completely. Alongisde the railway lines, the book also includes an outline of the road network in simplified form to allow the inter-relationship between railways and roads to be clearly identified. In addition to mapping, each volume will also include a detailed historical sketch outlining the development of the area's railway network, a representative selection of photographs as well as a detailed index and a gazetteer of stations with opening and, where appropriate closure dates. As such, each volume in the series becomes a detailed reference book on the area featured.