Personal documents; correspondence concerning his articles, published in the 'Encyclopaedia of the Social Sciences' 1929-1934; correspondence with Julius Braunthal 1943, G.D.H. Cole 1919-1938, Karl Kautsky 1913, 1932, Harold Laski 1939-1943, Franz Mehring 1913, Max Nettlau 1929, Sidney Webb 1935, H.G. Wells 1939, David Wijnkoop 1934 and others; photocopies of letters from Beer to his daughter Hetty Beer 1931-1940; list of planned articles for the 'Encyclopaedia' on socialist personalities and organizations, with manuscripts; notes for and manuscripts of his books 'Early British economics' 1938 and a printed copy with his annotations, 'An inquiry into Physiocracy' 1939 and a printed copy with his annotations and 'Outline of early economic thought' n.d.; copy of his book 'Fifty years of International Socialism', translated into Hebrew, n.d.; manuscripts and typescripts of articles and reviews of books 1935-1937 and n.d.; typescript of an article by Benedikt Kautsky entitled 'Die diplomatischen Beziehungen Deutschlands und Englands in der Vorkriegszeit' with annotations by Max Beer; press clippings of reviews of his books 1935-1940; articles on his death; letters received by his family after his death (partly photocopies) 1943; photocopies of the correspondence conducted by Hanna, Hetty and Ralph Beer with the University of Hull 1968-1982 and the Friedrich Ebert Stiftung 1978-1982 concerning the collection of her father.