This file includes several letters exchanged with M.P. Marshall as well as the following enclosures: A. Marshall, 'The pure theory of foreign trade. The pure theory of domestic values' (1st published 1879, reprinted by London School of Economics, 1930); correspondence with Claude Guillebaud and D. Macmillan concerning the Mexican edition of Alfred Marshall's selected writings, 1940; correspondence with Claude Guillebaud concerning J.M. Keynes' co-executorship of M.P. Marshall's will, 1944-5 and with Claude Guillebaud, G.M. Trevelyan and Pauline Guillebaud on her autobiography, 1944.