1950's British Railways Locomotive Allocation Railway Correspondence & Travel Society supplements from Railway Observer Supplement no 7 June 1950 North Eastern Region 4 Sides Supplement no 9 August 1950 Western Region 7 sides Supplement no 3 June 1951 Southern Region 4 Sides ( scuff on back sheet ) Supplement no 3 July 1953 Southern Region 4 sides.
