- 1GEC Industrial Locomotives Ltd proposed 25kV a.c. locomotives (GEC/2/2/1/36)
1982, file - 2Mining locomotives mechanical parts (GEC/2/2/1/71)
1972-1979, file - 3Overseas railways flexible drives, cab frames and other mechanical details (GEC/2/2/1/76)
1983-1986, file - 4Overseas railways comparisons of static gauges, structure limits, curve and Vogel diagrams (GEC/2/2/1/77)
1959-1992, file - 5Brackets and piping details (GEC/2/2/1/79)
1975-1991, file - 6Welding attachments and frame details (GEC/2/2/1/81)
1975-1991, file - 7Cab, generator compartment, bulkhead and handrails & footplates assembly details (GEC/2/2/1/82)
1976-1980, file - 8Brake details, electrical assembly and cable diagrams (GEC/2/2/1/85)
1975-1979, file - 9Lighting and cab door arrangements (GEC/2/2/1/86)
1978-1980, file - 10Mechanical parts (GEC/2/2/1/87)
1978, file - 11General outlines and arrangements and mechanical parts of diesel hydraulic industrial locomotives (GEC/2/2/1/88)
1978-1980, file - 12Painting diagrams, nameplates, t/m ducting and window details (GEC/2/2/1/90)
1976-1980, file - 13Wheel, axle and tyre assembly and motor bogie arrangements (GEC/2/2/1/91)
1975-1979, file - 14Bogie arrangements, general outlines and longitudinal sections of diesel electric industrial locomotives (GEC/2/2/1/93)
1964-1980, file - 15Mechanical details including axle box, radiator, exhaust and suspension arrangements for a 75 ton diesel and diesel-electric industrial locomotive (GEC/2/2/1/94)
1975-1979, file