- 1Codes of Practice files (GEC/1/4/2)
1992, file - 2Codes of Practice file and Drawing Office Routine Letters Standards Manual (GEC/1/4/3)
1953-1988, file - 3Codes of Practice -/1000 and Index & -/0000 (GEC/1/4/4)
1992, file - 4Codes of Practice -/2000 to /5000 and -/7000 to /9000 (GEC/1/4/5)
1991-1992, file - 5First Aid Provisions at Trafford Park, Managing the Tendering Process, Department Quality Management Review, Revisions to Codes of Practices and Commercial Department Ordering Procedure files (GEC/1/4/6)
1975-1992, file - 6GEC Traction Limited Company Health and Safety Policy file (GEC/1/4/7)
1982-1986, file - 7Associated Electrical Industries Engineering Standards (GEC/3/9/1)
1931-1962, file - 8Associated Electrical Industries Engineering Standards (GEC/3/9/2)
1935-1966, file - 9Associated Electrical Industries Engineering Standards (GEC/3/9/3)
1960-1966, file - 10British Thomson-Houston Co Ltd Engineering Standards (GEC/3/9/4)
1953-1966, file - 11Associated Electrical Industries Engineering Standards (GEC/3/9/5)
1958-1965, file - 12Associated Electrical Industries Engineering Standards (GEC/3/9/6)
1952-1966, file - 13Associated Electrical Industries Engineering Standards (GEC/3/9/7)
1958-1966, file - 14Associated Electrical Industries material specifications (GEC/3/9/8)
1963-1966, file - 15Associated Electrical Industries material specifications (GEC/3/9/9)
1962-1964, file