- 1Brake details (GEC/2/2/2/17)
1968, file - 2Locomotive details, inlcuding drawings for New South Wales State Mines Authority, Australia (GEC/2/2/2/20)
1967-1973, file - 3Window and door arrangements (GEC/2/2/2/23)
1963-1973, file - 4General outlines of electric locomotives (GEC/2/2/2/24)
1965-1968, file - 5Piping and cab details (GEC/2/2/2/32)
1969-1973, file - 6Electro diesel locomotive piping and frame arrangements (GEC/2/2/2/37)
1962-1984, file - 7Diesel hydraulic shunter mechanical details (GEC/2/2/2/43)
1970-1973, file - 8Wheels and axle details (GEC/2/2/2/48)
1963, file - 9Mechanical details (GEC/2/2/2/49)
1962-1970, file - 10Control apparatus equipment drawings (GEC/2/2/3/4)
1971-1973, file - 11Electrical control apparatus, wiring diagrams and equipment layouts (GEC/2/2/4/6)
1971-1989, file - 12Overseas railways electrical control apparatus and wiring diagrams (GEC/2/2/4/7)
1941-1957, file - 13General arrangements and outlines of diesel electric locomotives for UK & overseas railways (GEC/2/2/2/116)
1959-1973, file - 14Mechanical parts and details (GEC/2/2/2/125)
1961-1972, file - 15Equipment arrangements and general outlines (GEC/2/2/2/126)
1947-1965, file