- 1Drawing Office records (GEC/2)
1874-1994, sub-fonds - 2Drawings (GEC/2/2)
1874-1993, series - 3GEC Industrial Locomotives Ltd drawings (GEC/2/2/18)
1964-1982, sub-series - 4Mechanical details (GEC/2/2/18/1)
1964-1982, file - 5Air piping details and wiring diagrams (GEC/2/2/18/2)
1977-1981, file - 6Fuel tank detail, vogel diagrams, and compressor & fan details (GEC/2/2/18/3)
1975-1979, file