British Railways Rule Book 1950. Preface says "To operate from Jan 1962".
British Railways Rule Book 1950 Hardback Book
British Railways Rule Book 1950 As Issued 1950 Hardback Pocket Book Free P&P
British Railways Rule Book 1950 Hardback, Dated 1st January 1950, Code BR 87109
British Railways Rule Book 1950 (1961 Edition) With Amendments to 1972 (N1)
British Railways Rule Book 1950 - October 1961 Edition (B1)
British Railways Rule Book 1950, 1961 Reprint (I)
