The letters and papers of Chaim Weizmann : Series A, Letters. . Vol. 13, March 1926 - July 1929 / Gen. ed. Barnet Litvinoff. Ed.: Pinhas OferChaim Weizmann - Litvinoff, Barnet; Ofer, Pinhas (The letters and papers of Chaim Weizmann : Series A, Letters, 1978)