- 1Sudan Railways, Nyasaland Railways, Empresa Municipal de Transportes (Madrid), Husky Stock Administration, Wilfred Marley Ltd and Post Office Railways order files (GEC/3/4/1)
1957-1967, file - 2Northern Ireland Railway Co, Woodall-Duckham Construction Company, Stock, Otto-Simon Carves for Port Talbot and Ruston & Hornsby French Delegation order files (GEC/3/4/2)
1945-1968, file - 3Westinghouse Brake and Signal Co, British Steel Corporation Stanton & Staveley coke car, Stewarts & Lloyds, Corby and Sierra Leone Development Company Ltd order enquiry files (GEC/3/5/1)
1956-1971, file - 4Sierra Leone Development Company Ltd, Robert Stephenson & Hawthorns Ltd, English Clays Lovering Pochin & Co Ltd, British Steel Corporation, Corby and NCM, Delft, Holland order enquiry files (GEC/3/5/2)
1956-1972, file
