Includes memoir by Sir Nevill Mott (Biographical Memoirs of Fellows of the Royal Society, Vol. 1, November 1955); school reports and letter from St. John's College, Cambridge, 1906-12; papers relating to the Royal Flying Corps, 1915; correspondence with Horace Lamb; report on computing at University of Cambridge, 1937-8; notes and correspondence relatinng to the establishment of new college at Cambridge and application for grant, 1946-8 & 1951; obituaries, 1954; and papers relating to various honours received by Lennard-Jones, 1932-53; and miscellaneous photographs of Lennard-Jones, colleagues and departments