- 1General outline for a 1000h.p. diesel electric locomotive (GEC/2/2/2/46)
1954, file - 2Wiring diagrams for British Railways and Buenos Aires & Pacific Railway (GEC/2/2/2/120)
1956-1968, file - 3Post Office (London) Railway and overseas railways diagrams of connections (GEC/2/2/2/171)
1908-1934, file - 4Boiler & firebox plates (GEC/2/2/5/12)
1937, file - 5Overseas railways general arrangements of diesel electric locomotives (GEC/2/2/2/261)
1947-1956, file - 6Frame arrangements and equipment outlines for a DE and DH prototype locomotive, mechanical details for a British Transport Commission 1000hp locomotive and for Buenos Aires & Pacific Railway, Great Western Brazil Railway, Tasmanian Railway and New Zealand Railways (GEC/2/2/2/305)
1950-1959, file - 7Buenos Aires Great Southern Railway boiler and heating components for locomotive class 4-8-0 (GEC/2/2/5/50)
1947, file - 8Lifting hooks, slings and shipping locomotives diagrams for overseas railways (GEC/2/2/5/51)
1928-1955, file - 9Mechanical parts for overseas railways (GEC/2/2/2/324)
1953-1955, file - 10Mechanical parts for Central Argentine Railway, Buenos Aires & Pacific Railway and RFDN (Brazil) and mechanical details for the DH & DE prototype locomotives (GEC/2/2/2/347)
1953-1956, file - 11Mechanical parts including brake arrangements for Buenos Aires & Pacific Railway, Central Argentine Railway and Indian Railways (GEC/2/2/5/63)
1948-1958, file - 12Overseas railways painting diagram and number plates for 1000hp electric locomotives (GEC/2/2/5/64)
1948-1957, file - 13Mechanical parts for Tasmanian Government Railways, RFDN, Brazil, Queensland Government Railways, Egyptian State Railways and DH & DE prototype locomotives (GEC/2/2/5/68)
1947-1952, file - 14Mechanical parts for the British Transport Commission DE & DH prototype locomotives and for overseas railways locomotives including Queensland Government Railway, Central Argentine Railway, Nigerian Railway, Buenos Aires & Pacific Railway, Great Western Railway and RFDN (Brazil) (GEC/2/2/5/70)
1952-1956, file - 15Locomotive mechanical parts for overseas railways and for the British Transport Commission DH & DE locomotive prototype (GEC/2/2/5/72)
1953-1956, file