Some correspondence, papers, notebooks and publications of Sir James Hopwood Jeans. Early manuscripts in the series relate to Jean's education at Trinity College, Cambridge, in the form of early lecture notebooks, largely on mathematical topics. A collection of letters, 1901-1907, documents his treatment for tuberculosis at Ringwood Sanatorium, where he completed work on the theory of gases; correspondents included G H Hardy and Adam Sedgewick among others. Jean's engagements in popularizing science are represented by proofs and typescript of lectures and essays, especially those written for the BBC, 1934-1935, together with associated letters and press cuttings. The series contains collections of offprints, reprints, and extracts of published works by Jeans and others, notably from the Philosophical Transactions and the Philosophical Magazine.

Minute book of the Metropolitan Red Lion Club, with letters from members and some verses, menus and sketches. Press cuttings give resumés of the Club's activities and its connection with the British Association for the Advancement of Science.

Records of the Royal Polytechnic Institution (RPI), 1837-1881 and undated, comprising:

Leases of premises, 1838-1876, including no 5 Cavendish Square; prospectus, 1837; correspondence and papers concerning the foundation of the Institution, its provisional committee, shares, status and affairs, 1837-1839 and undated, including its charter, 1839, and papers on arbitration on a dispute between W M Nurse and the Institution; correspondence and papers relating to activities and affairs of the Institution, 1838-1842 and undated, including documents on the alleged infringement by the Institution of a patent for a diving dress, 1838, and an agreement with W H F Talbot permitting the use of his patented photographic process, 1841; photocopy of a letter from Robert Longbottom, RPI Secretary, to Samuel Morse, 1846; copy of charter, 1852; letter concerning a school visit to the RPI, 1858;

Catalogues of the Polytechnic Institution (copies), 1838-1840, and Royal Polytechnic Institution, 1844-1845; programmes for 1861, 1876, 1878 and 1881; bound volumes of RPI programmes, 1873-1878; reports, 1879-1880; particulars and conditions of sale of the RPI premises, 1881;

Books by authors associated with the RPI, including various publications by John Henry Pepper: The Boy's Playbook of Science, 2nd edition, 1860.; Popular Lectures for Young People and Half Hours with the Alchemists, 1st edition, 1855; The Playbook of Metals, 1st edition, 1869 and Cyclopaedic Science Simplified, 1st edition, 1869; The Book of The Lantern by T C Hepworth, 2nd edition, 1889; Memory by William Stokes, 2nd edition, 1888 and Rapid Writing by William Stokes, 4th edition, 1873; issues of various contemporary journals containing information on or advertisements for the Institution [1839]-1845, some with illustrations, among them scientific equipment, including four parts of the London Polytechnic Magazine, 1844, six parts of its continuation, The Polytechnic Review and Magazine, 1844, and five parts, 1845; advertising poster, 1840;

Book of press cuttings relating to the Institution from 1842, many lacking details of their source; five tokens bearing the name of the Institution, 1840; photogenic transfer made at the Institution, 1840; a ceramic plate fired at the RPI, 1866;

Illustrations and photographs of illustrations from 1840, some undated, including the great hall and other shots of the interior and exterior, 1843, and demonstrations, including the diving bell.

Working papers and correspondence of Sir Francis (Franz) Eugene Simon. Scientific notebooks in the collection date from 1919-1934, largely the period of Simon's researches on low temperature physics at the Physikalisch-Chemisches Institut of Berlin University, and subsequently at Breslau. Other notes and manuscripts for lectures and articles are post 1930, while a large group of correspondence files are from the years 1922-1956, providing a full account of Simon's dealings with many fellow scientists and scientific organisations. Individual letter files concern V.M. Goldsmidt, Max Born, Gwyn Owain Jones and Nevill Mott among many other notable figures. Details of Simon's involvement in atomic energy development are to be found in papers on uranium isotope separation (MAUD Committee notes) and UK Atomic Energy Authority correspondence. Simon's professional appointments as head of the Clarendon Laboratory and as science correspondent to the Financial Times are represented by substantial groups of letters. There are twelve notebooks with some associated papers; the series also includes files of lectures, articles, cuttings and souvenirs, including photographs, with files of correspondence. Two later additions to the collection consist of correspondence and files highlighting Simon's contacts with industrial firms, universities and international organisations.