- 1Drawing Office records (GEC/2)
1874-1994, sub-fonds - 2Drawings (GEC/2/2)
1874-1993, series - 3Kilmarnock Engineering Company Limited drawings (GEC/2/2/33)
1927-1931, sub-series - 4Mechanical parts for trolley and battery electric locomotives (GEC/2/2/33/1)
1928, file - 5Mechanical parts for a double bogie electric locomotive (Bombay Baroda), electric locomotive (Punjab), four wheel trolley locomotive (Blackpool Corporation), Rhodesia Railways electric locomotive, trolley locomotive (Scottish Oils), trolley locomotive (Mount Lyell), 28 ton battery electric loco (Aberdeen) and a battery electric loco (Peterborough) (GEC/2/2/33/2)
1927-1930, file - 6Electric battery and trolley locomotive mechanical parts (GEC/2/2/33/3)
1930-1931, file