Papers of Anthony Blunt, 1700-1983, comprising papers relating to Nicolas Poussin, notably files relating to his paintings, drawings and engravings, arranged by subject categories and containing notes, correspondence, articles, sales catalogues and illustrations (photographs, colour transparencies, slides, photocopies, prints, lithographs, engravings) of the named picture, details of the picture, variant versions (usually copies after), and in many cases, plates printed for the Poussin catalogue raisonné, 1824-[1983]; notes and illustrations relating to comparative material relevant to Poussin, including sculpture, 1700-1972; works by the circle of Poussin, [1938-1983]; drawings by the Poussin 'school', [1966-1977]; copies of letters by Poussin, and related notes, including photographs of letters from the Bibliothèque Nationale, Paris, [1964-1967]; notes, transcripts and letters relating to sales of works; correspondence with colleagues relating to Poussin's paintings and drawings, [1940-1982], notably Denis Mahon, 1960-1962, Walter Friedlander, 1944-1966, Erwin Panofsky, 1960-1961; notebooks, [1962-1965] and loose notes relating to Poussin; correspondence with Elizabeth Mackenzie (Lady Margaret Hall, Oxford), 1962-1982; offprints of various authors relating to Poussin; miscellaneous material relating to Poussin, [1940-1982], including a photocopy of his will;
papers relating to French art, notably notes, photographs and articles relating to French paintings, sculpture and architecture of the 16th-19th centuries, [1938-1977]; typescripts, note and correspondence relating to Chantelou's diary, [1980-1983]; papers, articles and illustrations relating to a publication by Ronald Cohen concerning the Le Nain Brothers, [1982]; articles relating to the Louvre, [1978];
papers relating to Italian art, notably notes, illustrations and articles relating to Italian Baroque architecture and sculpture, [1953-1982]; Borromini, [1956-1980]; Pietro da Cortona, [1966-1982]; notes, plans, photographs and papers relating to buildings and sculpture in Naples [1954-1981]; notes relating to Palermo, [1967]; typescripts, photographs, notes, correspondence and reviews relating to Blunt's A Guide to Baroque Rome;
articles by Blunt concerning the Royal Collection, 1972, and colonial architecture; plans, photographs, notes and review relating to a catalogue of Waddesdon Manor, [1974-1982]; correspondence, 1970-1983, largely concerning paintings and publications; articles by various authors, 1975-1982; offprints by Blunt, [1932-1982]; newspaper cuttings, 1929-1983; correspondence with publishers, 1972-1983; photographs, correspondence and articles relating to Blunt's personal collection, [1960-1982]; personal papers, [1932-1978], including appointment diaries, 1972-1978; papers from Blunt's school and university days, 1919-1930, including notes, articles, school and university magazines; papers relating to a trip to Russia, comprising notes on paintings, drawings and architecture,1935, two guidebooks, 1931, 1934.

Papers of Sir Augustus Wall Callcott, 1786-1837, comprising travel journals and papers largely from Callcott's honeymoon in Europe in 1827-1828, notably including lists, descriptions and sketches of pictures from various art collections visited in Italy, Germany, Austria and Czechoslovakia.

Papers of Johannes Wilde, 1916-1995, comprising files of working papers including notes, (manuscript and typescript), sketches, correspondence, photographs, lectures and slidelists, 1916-1965. Wilde meticulously wrote out the text of his lectures each time he gave them, making it possible to trace the evolution of ideas from the earlier to the later versions of the same piece.

Working papers relating to Michelangelo, 1922-1965, (the largest section of material in the collection) including general life and work, specific works including the Sistine Chapel, the Pieta, Cartonetti, 'Christ before Pilate'; his relationship with other artists, including Leonardo, Vasari, Raphael, Sebastiano; his drawings, including notes for a short survey of drawings, lectures, and a summary catalogue; his work in Florence, notably the façade of the Church of San Lorenzo, including correspondence with James S Ackerman concerning his book, The Architecture of Michelangelo (A Zwemmer, London, 1961), the Medici chapel and tombs, including lecture of Michelangelo's designs for the tombs, the Sagrestia Nuova, including draft chapter of its history, various works in the Palazzo Vecchio, the Hall of the Great Council, the Sala del Consiglio Grande, 'the Battle of Cascina', 'Victory', 'Leda', including correspondence concerning the publication of an essay, 1957; the Papal Tombs in Rome, the Marcus Aurelius statue in the Piazza del Campidoglio, Rome, the Sistine Chapel, Rome, the 'Battle of Angiare'; note and transcripts of Michelangelo's letters [now at the British Museum and Oxford]; notes on Michelangelo's drawing methods and early drawings;
list and notes of Wilde's new students [1948], catalogue entries for the catalogue of drawings at Windsor Castle, 1953;

notes relating to other artists, 1949-1962, notably Giotto, Leonardo da Vinci, Vasari, Masaccio, Pierino da Vinci, Raphael, Giovanni Bellini, Mantegna, Corregio, Parmagianino, Daniele da Volterra, Sebastiano del Piombo, Marcello Venusti, Giorgione, Antonello, Jacopo de' Barbari, Giovanni de Busi Cariani, Domenico Fetti, Jacometto, Domenico Mancini, Jacopo Palma Vecchio, Tiepolo, Tintoretto, Titian, Dutch/ Flemish painting, including Wilde's MA thesis on Rembrandt, 1916; notes on the collection of Archduke Leopold Wilhelm known as the Theatrum Pictorium, teaching notes, miscellaneous articles and notes including Henry VIII monument, landscape painting, Vasari, Fontanellato;

travel journals, 1921-1957, including notes relating to Modena, Uffizi, Rome, and exhibitions;
correspondence, 1937-1970, including letters to Wilde thanking him for the gift of his British Museum catalogue; correspondence with Paola Barocchi, 1962-1963; Kenneth Clark, 1959-1964; James A Crabtree, 1964, relating to a Michelangelo drawing; Brigadier Roy Frank Johnson, 1954, relating to portraits owned by him and Count Antoine Seilern; Arthur Ewart Popham, 1941-1949, covering production of of the catalogue of Italian Drawings at Windsor castle; private matters, and including some of the travel permits Wilde required during the war; Count Seilern, 1964, 1970; Hugh Squire, 1960, relating to a drawing in his collection;
miscellaneous items including photographs of Wilde and colleagues, [1920s-1930s]; Johannes and Julia Wilde, [1960s]; one of Wilde's parties, undated; copies of speeches given by Wilde on his 60th, 65th and 70th birthdays and by Anthony Blunt at a party, 1961; copy of Peter Kidson's lecture 'The Recent Transformation of Art History', 1995; copies of the editorial and obituary of Wilde, from The Burlington Magazine.