1 sheet Letter from Henry Hyde Clarke to Francis Trevithick Regarding Francis’ Memoir and Claim Against the Peruvian Congress
1 sheet Letter from Henry Hyde Clarke to Francis Trevithick Advising on His Claims Against the Peruvian Congress
1 sheet Letter from Frederick Trevithick to Francis Trevithick Regarding Recollections of Richard Trevithick's Steam Engine
1 item Letter from William Hammond Ambler [husband of Ann Ambler (nee Hackworth)], Huddersfield to Thomas Greener [?]
1 item Letter from William Hunter for Jane Hackworth (nee Golightly), Soho Works, Shildon to Thomas Greener, Etherley
2 items Letter from George Hardcastle, Sunderland to Thomas Greener and other trustees under the late Mr Timothy Hackworth