Papers of Samuel Tolansky, 1926-1974, comprising biographical and personal materials, 1928-1974, including printed obituaries and memoirs, notes on his educational and research record, photographs of colleagues and collaborators, personal and family correspondence and domestic papers; material relating to Tolansky's work in the Department of Physics, Royal Holloway College, 1946-1970, including general correspondence on equipment and supplies, research grants, and examinations, correspondence with the College regarding the Physics laboratories, and correspondence on visits to and by Tolansky; notebooks and working papers, 1940-1969, including laboratory notebooks, on subjects including nuclear spin, diamonds, lunar dust and interferometry; manuscripts of publications, 1926-1973, including scientific reports and articles, abstracts and book reviews, broadcasts and books, on subjects including interferometry, crystallography, diamond physics and jewish music; material relating to committee and advisory work, 1949-1973, for bodies including the University of London, Birkbeck College, the Kingston College of Art, the National Gallery, the Science Research Council, the Royal Society of Arts and the Institute of Physics; papers relating to external examination, 1947-1973, at the Universities of Bradford, Durham, Leicester, and Nottingham, the Royal University of Malta, the Gemmological Association of Great Britain and the Civil Service Commission; material concerning conferences, demonstrations and exhibitions, 1946-1972; scientific correspondence, 1932-1973, mainly relating to Tolansky's work on diamonds, with correspondents including officials of the Royal Society, the Royal Institution, the NASA Lunar Sample Research Programme, and numerous scientists, such as Charles Joseph Singer, Dame Kathleen Lonsdale, James Frederic Danielli, Sir Gordon Sutherland, Otto Robert Frisch and Patrick Moore; correspondence relating to publications, 1942-1973; correspondence and texts relating to lectures, broadcasts and television appearances, 1947-1973.