Diaries 1910-1911, 1916, [1918?]-1933, including his 'Russian' diary; extensive correspondence with Emma Goldman 1917, 1924-1936; correspondence c. 1906-1913, 1919-1936, with Rafail Abramovič 1930-1934, Angelica Balabanoff 1925-1936, Stella Ballantine 1924, 1927-1936, Roger Baldwin 1925-1927, 1931,...
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