- 1Rolls-Royce Ltd manuals (GEC/3/6/1)
1962-1975, file - 2Ruston & Hornsby Ltd manuals (GEC/3/6/2)
1954-1955, file - 3Ruston & Hornsby Ltd, Niigata Converter Company Ltd and Davies & Metcalfe Limited manuals (GEC/3/6/3)
1936-c 1960, file - 4Diagrams, motor curves and drawings for manuals (GEC/3/6/4)
1928-c 1980, file - 5Manuals for various companies (GEC/3/6/5)
1956-1984, file - 6Manuals for various companies (GEC/3/6/6)
1958-1979, file - 7Manuals for various companies (GEC/3/6/7)
1955-1971, file - 8English Electric Company manuals (GEC/3/6/8)
1959, file - 9English Electric Company manuals (GEC/3/6/9)
1955, file - 10English Electric Company manuals (GEC/3/6/10)
1949-1956, file - 11English Electric Company manuals (GEC/3/6/11)
1949-1950, file - 12English Electric Company manuals (GEC/3/6/12)
1949-1953, file - 13English Electric Company manuals (GEC/3/6/13)
1947-1949, file - 14English Electric Company manuals (GEC/3/6/14)
1949-1951, file - 15English Electric Company manuals (GEC/3/6/15)
c1950-c 1960, file
