- 1Archive of Robert Stephenson & Co Ltd (ROB)
1823 – c 1960, fonds - 2R & W Hawthorn Leslie & Co Archive (HL)
1846-1963, fonds - 3Records of English Electric Company Limited (EE)
1918-1968, fonds - 4Papers of J O P Hughes (HUG)
c 1950 - Autumn 1975, fonds - 5Records of Nasmyth, Wilson & Co Ltd, Locomotive Builders, Patricroft (NAS)
1839 - 1938, fonds - 6Crewe Locomotive Works Drawings (CREWE)
13 March 1845-15 May 1989, fonds - 7Engineering Drawings from the Derby Carriage and Wagon Works (DERBYC&W)
c 1877 - 1965, fonds - 8Highbridge Works Drawings (HIGHB)
1875 - 1930, fonds - 9Bow Works Locomotive Drawings (BOW)
1855-1959, fonds - 10Melton Constable Carriage and Wagon Works Drawings (MELT)
1881 - 1936, fonds - 11Plaistow Works Locomotive Drawings (PLAI)
c 1880 to 1938, fonds - 12Stoke Works Drawings (STOKE)
1868 - 1927, fonds - 13Records of North British Locomotive Company Ltd & Constituent Companies (NBL)
1835 - 1959, fonds - 14Gorton Works Contractors' Drawings (GOR)
1850 - 1950, fonds - 15Stratford Works Drawing Office Records (STRAT)
1847 - 1963, fonds
