- 1Control apparatus equipment drawings (GEC/2/2/3/4)
1971-1973, file - 2Wiring diagrams and mechanical details (GEC/2/2/3/5)
1962-1979, file - 3Equipment layout and wiring diagrams (GEC/2/2/3/6)
1960-1986, file - 4Electrical control apparatus, wiring diagrams and equipment layouts (GEC/2/2/4/6)
1971-1989, file - 5Wiring diagrams including for British Railways ac locomotives AL5 (Class 85) and London Transport 1967 tube stock (GEC/2/2/34/17)
1966-1967, file - 6Wiring diagrams including London Transport Board c 1969 stock and South African Railways and Harbours (GEC/2/2/34/26)
1968-1969, file - 7Indian Government Railways and British Railways schematic and wiring diagrams including for London Transport Executive Victoria Line trial with 1960 tube stock (GEC/2/2/34/33)
1962-1965, file - 8Equipment layouts including for London Transport 1967 tube stock wiring charts (GEC/2/2/34/39)
1968, file - 9Wiring diagrams and electrical equipment layouts including for South African Railways and Harbours and London Transport 1972 tube stock (GEC/2/2/34/40)
1971, file - 10Electrical equipment including for South African Railways and Harbours and London Transport 1960 tube stock (GEC/2/2/34/60)
1968, file - 11Electrical equipment and schematic diagrams including for London Transport Board Victoria Line and Córas Iompair Éireann (GEC/2/2/34/61)
1963-1991, file - 12Electrical schematics including for London Transport Board C69 surface stock, Netherlands Railway, South African Railways and Harbours and New South Wales Government Railways (GEC/2/2/34/73)
1968-1983, file - 13Equipment cases and frames including for South African Railways and Harbours and London Transport Board C69 stock (GEC/2/2/34/75)
1969-1975, file - 14Electrical equipment case layouts including for London Transport Board C69 surface stock (GEC/2/2/34/78)
1967-1969, file - 15Electrical equipment layouts including for London Transport Executive 1973 tube stock and South African Railways and Harbours (GEC/2/2/34/85)
1972, file
