Smedley to Sanger, April 1, 1932; Battle Hymn, pp. 123-24,151, 194. Interviews: Chen Hansheng; Rewi Alley; Maude Russell. Otto Braun, A Comintern Agent in China (Stanford, 1982), p. 6. See also Mu Xin, Chen Geng tongzhi zai Shanghai (Shanghai, 1980). On police surveillance see Shanghai (British) police reports in F.B.I. 100-68282-1B32 (Exhibits); also Isaacs, Re-encounters in China, p. 29, and interview with Frank Glass and Grace Cook. The authority on address changes is Ge Baochuan, interviews.