BR EASTERN REGION - SUPPLEMENTARY NOTICE OF SIGNALLING ALTERATIONS P'BORO 1972
BR North Eastern Region, Supplementary Operating Instructions, Oct 1958,
1979 British Rail Eastern Region Supplementary Operating Instructions Book
1978 British Rail Eastern Region Supplementary Operating Instructions Book
1967 British Railways Eastern Region Supplementary Operating Instructions Book
British Rail Eastern Region Supplementary Operating Instructions 1978 Parkgate
