- 1Records of North British Locomotive Company Ltd & Constituent Companies (NBL)
1835 - 1959, fonds - 2A History of the North British Locomotive Co Ltd (YA1999.83)
1953, item - 3Drawing Office records (GEC/2)
1874-1994, sub-fonds - 4Drawings (GEC/2/2)
1874-1993, series - 5Weight books (GEC/3/3)
1934-1963, series - 6North British Locomotive Co Ltd drawings (GEC/2/2/29)
1936-1966, sub-series - 7Engine, air, water and vacuum pipes arrangements for the British Rail Class 21 (GEC/2/2/29/1)
1956-1964, file - 8Piping and vacuum arrangements for a Class 21 (GEC/2/2/29/2)
1955-1957, file - 9Platform and frame arrangements for type 2 locomotives (GEC/2/2/29/3)
1955, file - 10Class 21 locomotives mechanical parts (GEC/2/2/29/4)
1952-1966, file - 11Mechanical parts (GEC/2/2/29/5)
1948-1949, file - 12Mechanical parts (GEC/2/2/29/6)
1954-1962, file - 13Mechanical parts including brake arrangements and radiator shutters (GEC/2/2/29/7)
1948, file - 14Brevo reversing gear and gearbox details (GEC/2/2/29/8)
1936-1942, file - 15Weight diagrams book (GEC/3/3/5)
1950-1954, item
