- 1East African Railways and Harbours Class 91 underframe arrangements (GEC/2/2/2/30)
1966, file - 2Mechanical components for overseas railways (GEC/2/2/2/31)
1965-1969, file - 3Air pipes and underframe arrangements (GEC/2/2/2/42)
1965-1967, file - 4Class 92 locomotive underframe arrangement (GEC/2/2/2/68)
1968-07-23, file - 5Assembly of equipment frames (GEC/2/2/2/94)
1958-1970, file - 6General arrangements and outlines of diesel electric locomotives for UK & overseas railways (GEC/2/2/2/116)
1959-1973, file - 7Bearings and mechanical parts (GEC/2/2/17/1)
1971, file - 8East African Railways bearing details (GEC/2/2/17/2)
1960-1972, file - 9General arrangements for Post Office (London) Railway and overseas railways (GEC/2/2/2/179)
1947-1975, file - 10Mechanical parts for overseas railway locomotives (GEC/2/2/2/191)
1958-1960, file - 11Mechanical details including locomotive modification charts, layouts of lighting and conduits, underframe modifications, air piping details (GEC/2/2/2/198)
1966-1968, file - 12Mecahnical arrangements including roof equipment layouts and piping details (GEC/2/2/2/200)
1968-1969, file - 13Mechanical details (GEC/2/2/2/201)
1964-1967, file - 14Overseas railways diesel electric locomotives outline diagrams (GEC/2/2/5/10)
1948-1955, file - 15Diesel electric locomotive general outlines for overseas railways (GEC/2/2/2/224)
1949-1953, file