57 books • 13 series
Book #24: Buckinghamshire, Bedfordshire and West Hertfordshire
Book #41: Manchester and South Lancashire
Book #42: Essex and East Hertfordshire
Book #43: West, East and North Lancashire
Book #49: Yorkshire
Book #31: North West Scotland
Book #39: Liverpool and Wirral
Book #40: Cheshire
Book #4: Rail Freight Since 1968