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Short History of Sans Pareil by John Hicks, having restored the engine, and on presentation to the Science Museum, London

Correspondence accumulated by John Wesley Hackworth and Ann Hackworth (Nee Turner)

Description of patented designs

Notebooks/diaries

Letters copied by John Wesley Hackworth

Specifications and patents

Articles and memorandums of agreement

Articles copied or gathered by John Wesley Hackworth

Business papers of John Wesley Hackworth

Lecture notes

Research papers of John Wesley Hackworth

Miscellaneous fragmented/unidentifiable articles and correspondence, including what appear to be fragments of his own proposed book on Timothy Hackworth

Notes regarding the family

Drawing of John Wesley Hackworth’s valve gear (possibly a tracing)

Headed notepaper

Letter from John Wesley Hackworth to Mr Gray [John Gray]

Letter from George Edward Young, Soho Engine Works, Shildon to John Wesley Hackworth c/o John Gray, London and Brighton Railway, Brighton

Letter from Timothy Hackworth Sr., 7 Randles [sic], King St, Cheap side to John Wesley Hackworth Soho works, Shildon

Specification no. 8875 John Wesley Hackworth, Improvements in Valves and Valve Gear for Marine, Locomotive and other Motor Engines with accompanying drawings

Memorandum on Leeds and it’s merchants, extracts from ‘London and Society’

Letter from Timothy Hackworth Sr., London Bridge Station to John Wesley Hackworth, Soho Works, Shildon

Letter from John Vernon, Leeds Mercury, Leeds to John Wesley Hackworth

Letter from John Wesley Hackworth, Soho Engine Works to John Gray, Liverpool

‘An extract from an article which appeared in the London Quarterly Review for January 1858 relative to the invention of the steam blast in the locomotive’

Letter from John Wesley Hackworth, Darlington to Editor of the Northern Daily Express

Letter from John Wesley Hackworth, Darlington to Editor, ‘Northern Daily Express’

Letter from Zerah Colburn, Office of ‘The Engineer’, The Strand, London to John Wesley Hackworth

Memorandum of agreement between John Wesley Hackworth and Robert Teasdale of Teasdale Brothers Darlington

Description of Hackworth’s Valve Motion

Letter from Timothy Hackworth Sr., Glasgow to John Wesley Hackworth Soho, Shildon

Letter from Jane Dutton, Newburn to John Wesley Hackworth

Articles of agreement between John Wesley Hackworth and James Clark, William Clark and Thomas Robinson Clark, Thomas Clark and Company, Newcastle.

'The Locomotive and Railway System/The history of the locomotive and railway system, some with notes'. Numbered 9, 8, 7 & 5

Letter from Joseph Pease, Darlington to the Directors of the Dublin and Kingston Railway

Extracts/notes on Nicholas Wood's treatise 1825; James Walker & John Urpeth Rastrick's Report to the Liverpool and Manchester Railway Directors dated March 7th 1829

Letter and notes from Harris Dickinson, Newcastle-upon-Tyne to Timothy Hackworth

Letter from John Bone, Newcastle upon Tyne to Mrs John Hackworth [Ann Hackworth (Nee Turner)], c/o Mrs Turner, High Terrace, Darlington

Letter from Timothy Hackworth Sr., No 7 Randalls, King Street, Cheap Side to John Wesley Hackworth

Specification no. 4350 John Sturgeon, Supplying Air to Mines

Letter from W. Hann, Killingworth to John Wesley Hackworth

Specification no. 4246 John Wesley Hackworth and Albert Hackworth, Valve Gear

Specification No. 929 David Joy, Steam Engines

Declaration by William Jackson and William Mather, both of Darlington

Declaration by Thomas Sergison, Engineer of North Road, Darlington, Durham

Letter from an unknown sender, Dowlais Iron Works, Merthyr Tydril to John Wesley Hackworth, Darlington Engine Works

Specification no. 2175 John Miller, Air Pumps

Letter from an unknown sender, Dowlais Iron Works, Merthyr Tydril to John Wesley Hackworth Engine Works, Darlington

Specification no. 103 John Wesley Hackworth, Ventilating and Working Mines, and Utilising the Gases Obtained from Mines

Partial letter and notes from John Wesley Hackworth, Sunderland to Editor, Railway Herald

Patent no. 103 John Wesley Hackworth, Ventilating and Working Mines, and Utilising the Gases Obtained from Mines