- 1Shunter pipework details (GEC/2/2/2/9)
1939-1963, file - 2Mechanical details (GEC/2/2/18/1)
1964-1982, file - 3Buffers and drawgears (GEC/2/2/2/170)
1963-1970, file - 4Lifting diagrams, shackles and slings for overseas railways including Nigerian Railways, Nyasaland Railways and Burma Railways (GEC/2/2/5/56)
1934-1952, file - 5Diesel electric shunting locomotive axlebox arrangements, general outlines and general arrangements amongst mechanical parts for the overseas railways of Tasmania, Australia, Brazil, Egypt, New Zealand, and Portugal (GEC/2/2/2/344)
1945-1954, file - 6Mechanical parts for the British Transport Commission DE & DH prototype locomotives and for overseas railways locomotives including Queensland Government Railway, Central Argentine Railway, Nigerian Railway, Buenos Aires & Pacific Railway, Great Western Railway and RFDN (Brazil) (GEC/2/2/5/70)
1952-1956, file - 7Locomotive mechanical parts for overseas railways and for the British Transport Commission DH & DE locomotive prototype (GEC/2/2/5/72)
1953-1956, file - 8Conduit clips and carriers, arrangements of electric lighting conduits, cab light and pattress for overseas railways (GEC/2/2/5/75)
1951-1958, file - 9Mechanical details for DE/DH prototype and overseas railways (GEC/2/2/5/83)
1949-1955, file - 10Mechanical parts for overseas railways (GEC/2/2/2/371)
1954-1958, file - 11Sierra Leone Development Company Ltd, Robert Stephenson & Hawthorns Ltd, English Clays Lovering Pochin & Co Ltd, British Steel Corporation, Corby and NCM, Delft, Holland order enquiry files (GEC/3/5/2)
1956-1972, file - 12Drewry Car Co Ltd, Metropolitan-Cammell Carriage & Wagon Co Ltd and Ruston Diesels brochures and publications (GEC/4/1/3)
1950-1960, file - 13Asia and North America photographs (GEC/4/2/1)
1947-1976, file - 14Australia, Tasmania and New Zealand photographs (GEC/4/2/3)
1949-1964, file - 15GEC Witton aperture cards (GEC/4/4/41)
c 1950, file
