- 1Electrical parts drawings for industrial overseas locomotives (GEC/2/2/1/9)
1975-1984, file - 2Mechanical details for Pakistan and Western Brazil locomotives (GEC/2/2/1/16)
1957-1981, file - 325kv ac/dc locomotive general outline and arrangements (GEC/2/2/1/39)
1975-1977, file - 4Class 58 & Class 38 equipment arrangements (GEC/2/2/1/44)
1984-1989, file - 5Motor and trailer bogie arrangements and details (GEC/2/2/4/2)
c 1950, file - 6Electrical layouts, mechanical details and frame arrangements (GEC/2/2/1/45)
1983, file - 7Control equipment pipe and conduit layouts (GEC/2/2/4/4)
1955-1959, file - 8Wiring diagrams and mechanical details (GEC/2/2/3/5)
1962-1979, file - 9Wiring diagrams and mechanical details (GEC/2/2/1/51)
1980-1981, file - 10Overseas railways electrical control apparatus and wiring diagrams (GEC/2/2/4/7)
1941-1957, file - 11Mechanical details (GEC/2/2/1/56)
1982-1988, file - 12Overseas railways mechanical details and S.N.C.F. T.V.G prototype (GEC/2/2/1/69)
1958-1983, file - 13General arrangements for Post Office (London) Railway and overseas railways (GEC/2/2/2/179)
1947-1975, file - 14Overseas railways painting diagrams and mechanical parts (GEC/2/2/1/75)
1967-1992, file - 15Overseas railways flexible drives, cab frames and other mechanical details (GEC/2/2/1/76)
1983-1986, file