- 1Mechanical parts drawings for South African locomotives (GEC/2/2/1/2)
1981, file - 2Mechanical parts drawings for Brazil, South Africa Railways and British Rail Class 373 (GEC/2/2/1/3)
1953-1989, file - 3South African Railways electric loco layouts (GEC/2/2/1/6)
1974-1988, file - 4Electrical parts drawings for industrial overseas locomotives (GEC/2/2/1/9)
1975-1984, file - 5South African Railways & Harbours tender drawings of mechanical parts for 25kV ac locomotives (GEC/2/2/1/19)
1974-1984, file - 6Bogie mechanical details for overseas railways (GEC/2/2/1/28)
1967-1986, file - 7Polish State Railways contractors committee drawings (GEC/2/2/2/22)
1960-1965, file - 8General outlines of electric locomotives (GEC/2/2/2/24)
1965-1968, file - 9Bogie co-co drawings for South Africa 7E class (GEC/2/2/1/35)
c 1970, file - 1025kv ac/dc locomotive general outline and arrangements (GEC/2/2/1/39)
1975-1977, file - 11Mixed UK and overseas electrical equipment layouts (GEC/2/2/4/3)
1953-1966, file - 12Control equipment pipe and conduit layouts (GEC/2/2/4/4)
1955-1959, file - 13Conduit, cable and equipment layouts (GEC/2/2/2/103)
1938-1949, file - 14Wiring diagrams and mechanical details (GEC/2/2/1/51)
1980-1981, file - 15General arrangements and outlines of diesel electric locomotives for UK & overseas railways (GEC/2/2/2/116)
1959-1973, file