- 1GEC Witton drawing register (GEC/2/1/1)
c 1960, item - 2Mechanical arrangements and details (GEC/2/2/15/4)
1957-1981, file - 3Post Office (London) Railway and overseas railways diagrams of connections (GEC/2/2/2/171)
1908-1934, file - 4Charts, schedules, traction engine outlines, diesel electric shunter elevations and schematic diagrams (GEC/2/2/9/1)
1954-1960, file - 5GEC Witton electrical equipment and wiring diagrams (GEC/2/2/9/2)
1954-1956, file - 6GEC Witton electrical equipment and wiring diagrams including for the Manchester-Sheffield-Wath electrification (GEC/2/2/9/3)
1949, file - 7GEC Witton electrical equipment and wiring diagrams including for Victorian Railways and South African Railways and Harbours (GEC/2/2/9/4)
1950-1958, file - 8GEC Witton electrical equipment and wiring diagrams including for British Railways, South African Railways and Harbours, Potugal Railways, and Ceylon Government Railways (GEC/2/2/9/5)
1950-1953, file - 9GEC Witton electrical equipment and wiring diagrams (GEC/2/2/9/6)
1960-1962, file - 10GEC Witton electrical equipment and wiring diagrams (GEC/2/2/9/7)
1959-1961, file - 11GEC Witton electrical equipment and wiring diagrams for british and overseas railways (GEC/2/2/9/8)
1940-1955, file - 12GEC Witton control diagrams and apparatus (GEC/2/2/9/9)
1960-1962, file - 13GEC Witton wiring diagrams including for battery locomotives and Glasgow Corporation Transport underground section (GEC/2/2/9/10)
1930-1938, file - 14Wiring diagrams, schematics and general arrangements of a British Railways class 84 (GEC/2/2/9/11)
1964-1969, file - 15Wiring diagrams and schematics for Class 84 locomotive units and layouts for Liverpool Street - Clacton Express M.U. trains (GEC/2/2/9/12)
1961-1962, file
