You are looking at a set of three Langloco series reference, fleet & illustrated softback books. They contain a wealth of information on the goings on in that period.
c1930s 1940s Railway Corridor Brake Carriage Technical Drawings x9 Ref E
c1930s 1940s Railway Post Office Sorting Van Technical Drawings x7 Ref A
c1930s 1940s Railway Post Office Van Carriage Technical Drawings x7 Ref S
c1930s 1940s Railway Corridor Carriage Technical Drawings x6 Ref C
c1930s 1940s Railway Various Carriage Technical Drawings x9 Ref K
c1930s 1940s Railway Corridor 3rd Class Carriage Technical Drawings x9 Ref G
