Programmes of concerts at which Chain played, 1920-22

Documents, 1928, 1929-30, issued by the Berlin branch of the USSR Volksarbeitskommissariat, authorising Chain to go to America to engage Russian artistes and musicians to give concerts in North and South America. The visa for Argentina in Chain's passport issued in October 1929 (see A.12) suggests that he made this journey and indicates his serious consideration at that time of a musical career