Not dated but it appears to be from around 1970. Valerie Singleton left the tv show in 1972.
STILL IN STEAM.A GUIDE TO WORKING STEAM RAILWAYS.IAN ALLAN BOOK BY E.L.CORNWELL
abc British Railways STEAM LOCOMOTIVES; Ian Allan 1966; Booklet
BRITISH RAILWAY STEAM LOCOMOTIVES.IAN ALLAN BOOK 1964.96 PAGES.SIZE 10 x 15cms
STEAM SCENE.IAN ALLAN MAGAZINE PUBLISHED 1985
Steam Alive! Trains Illustrated Magazine No 8 Ian Allan
