South Africa and the Communist International : A Documentary History, Volume 1 : Socialist Pilgrims to Bolshevik Footsoldiers 1919-1930 edited by A. Davidson, I. Filatova, V. Gorodnov and S. Johns
… Informant of South African Police, 5 April 1919 Document 2 Report of J. Den Bakker and S. Barlin to ECCI, (Extracts … from W.H. Andrews to S. Barlin, 27 April 1921 Document 6 Report of S. Barlin to Comintern [April–June 1921] Document … May 1921 Document 8 Letter from D.I. Jones to L. Trotsky, 2 June 1921 (Extract) Document 9 Letter from S. Barlin and …