Correspondence and related items concerning Butterfield's research on topics in eighteenth-century British history. Correspondents: G. M. Trevelyan, Randolph G. Adams, Edna Vosper, L. H. Buckingham, Alfred Booth, the Librarian of Peterhouse, B. W. Fagan, G.(?) N. Bickers, Shane Leslie, R. Doherty, E. H. Goddard, C. W. Pugh, G. P. Gooch, James Richard Stanhope Earl Stanhope, F. W. C. Pepper, Kimon Evan Marengo, Joyce Godber, Thomas Cooper, Bodley's Librarian, Edwin Hollis, George Hayward, Duncan Gray, Cicely Baker, R. H. Murray, Charles S. Drew, C. W. Fogarty, E. M. Hampson, J. E. Fagg, A. R. Aldridge, G. R. Potter, J. W. B. Landon, Librarian of Cambridge University Library, Anthony W. Shutter, Librarian of the National Library of Scotland, J. H. London, Frank H. Bond, Ian R. Christie, H. V. F. Somerset, Stephanie Plowman, J. P. Lamb, John K. G. Taylor, Professor Wilcox, Patrick King, R. Meredith, D. C. A. Bradshaw, Cedric Collyer, R. A. Taylor, W. E. Saxton, Richard Pares, Mary Mackenzie, Allan W. L. Seaman, J. M. Watkin, Eric J. Davis, Edward Hughes, F. C. Price, Eugene Charlton Black, M. J. Barnes, Cecil Price, J. H. Hodson, E. Simpson, Loren Reid, Rumold Fennessy, Harold Kurtz, Gladys Scott Thompson, Felix Markham, R. Kent Donovan, R. Dudley Edwards, Aileen Armstrong, D. T. Johnson, A. C. Body, W. F. Reddaway, Barbara Stephen.
Related items include: note of documents borrowed from G. M. Trevelyan, 7 December 1931, in Butterfield's hand, 1p.; `Letters in the Fox papers listed by Mr Butterfield', typescript, 3pp.; `Letters from the Fox papers, printed in Fortescue's Corres. Geo. III, Buckingham's Memoirs and Russell's Fox, wanted by the William L. Clements Library', typescript, 7pp.; typed transcript of a letter from Edmund Law, 5 November 1764, with a list of electors to a professorship, typescript, 3pp.; list of pamphlets relating to the petitioning and reforming movement in Nottingham, held in Nottingham Public Library, typescript, 1p.; copy of a letter from George J. Malet(?) to G. R. Potter, 16 June 1948, typescript; transcripts of documents, made by John K. G. Taylor, 5 sheets; `Charles James Fox letters in the William L. Clements Library', typescript, 2pp.; typed extract of a letter from Stephen Croft to Lord Rockingham, 16 December 1779; `List of Professor G. M. Trevelyan's Fox papers', typescript, 7pp.; `A trial chart of participants in the making of the Treaty [of Paris] of 1782-3', coloured chart with attached typescript key.