Two original BR staff manuals
British Rail Southern Rail Electrified Lines Manuals/Instructions 1980's
1966 British Rail ( Southern Region ) Electrified lines Instructions D C system
1976 British Rail Southern Region Electrified Lines Working Instructions Manual
1966 British Rail (Southern Region) Electrified Lines Instructions (I)
British Rail Southern Region Electrified Lines Instructions supplement 1966 book
British Rail Southern Region Electrified Lines Instructions 1966. Railway Rules.