Historical Overview of Black Resistance, 1932-1952 - The Congress of the People and Freedom Charter Campaign by Ismail Vadi, New Delhi, 1995
… communists, by 1928, comprised the great majority ~ 1,600 out of 1,750 members. But this development was not adequately … Trade Unions, which, by 1940, claimed a membership of 4,000. The combination he put together seemed to meet the …