Cassell & Co., Ltd Cassell 3 & 4 - Railway Guides Although many railway publications and timetables published by the various operators included maps, these were generally larger regional plans showing the complete network or parts thereof. Cassells published both The Official Guide to the Great Western Railway and The Official Guide to the London & South Western Railway . The former guide contained a map very similar to the county map of Devon found in the latter publication ( B&B 165 ) and the latter guide included plans of railway terminii, including Exeter and Plymouth. Paperback (card) cover to 1890 GWR Guide. With thanks to Gerald Baker Books. [1] These works were almost definitely published annually (although very few are held by any public libraries) and typically published both as hardback (red covers, 2 s ) or as paperback pocket editions (1 s ) in card covers. The paperback GWR edition of 1884, for example, had illustrations of Paddington St...