Papers mainly relating to the published work of Herbert Stanley Jevons, 1895-1963, correspondence on overseas development, coal and economics, 1909-1949; correspondence on housing in Wales, 1912-1914; papers relating to Ethiopia, 1935-1955, including correspondence with Emperor Haile Selassie I, 1937-1953; letters between Herbert Stanley Jevons and John Maynard Keynes, 1930-1936.