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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

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

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

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

Specification no. 4350 John Sturgeon, Supplying Air to Mines

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

Specification No. 929 David Joy, Steam Engines

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

Letter from W. Hann, Killingworth to John Wesley Hackworth

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

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

Partial letter/draft notes from John Wesley Hackworth to Editor, Darlington and Richmond Herald

Letter from Jane Dutton, Newburn to John Wesley Hackworth

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

Incomplete letter from John Wesley Hackworth to Editor, Royal Cornwall Gazette

Letter and envelope from John Wesley Hackworth to Editor, Northern Evening Express

Specification no. 3887 Ralph Dodds and George Stephenson, Locomotive Engines

Specification no. 1094 John Wesley Hackworth, Hoisting Machines

Specification no. 1094 John Wesley Hackworth, Hoisting Machines

Specification no. 1438 John Wesley Hackworth, Machinery for Working Blast Furnaces

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

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

Articles and letters from John Wesley Hackworth to Editor, the Northern Echo

Incomplete letter from John Wesley Hackworth, Darlington to an unknown recipient

Fragment of letter from John Wesley Hackworth, Darlington to an unknown recipient

Partial letter and notes from John Wesley Hackworth to Editor, Daily Exchange

Letter from John Wesley Hackworth, Darlington to Editor, Daily Exchange, Middlesbrough

Letter from John Wesley Hackworth, Darlington to Editor ‘The Exchange’

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

Pro forma letter/notice from John Wesley Hackworth sent out to various recipients

Envelope from an unknown sender in St John’s Wood to John Wesley Hackworth, Consulting Engineer, Darlington

Letter from John Wesley Hackworth, under the pseudonym of ‘Wylam’ to ‘Editor’ presumably sent to various editors including Editor of the Daily Herald

Letter from Allison Brothers, London to John Wesley Hackworth, Darlington

Specification no. 2175 John Miller, Air Pumps

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

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

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

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

Notes for lecture at Southport

‘The Generation and Application of Steam as a Motive Power’

Declaration by William Jackson and William Mather, both of Darlington

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

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

Description of Hackworth’s Valve Motion