His correspondence file comprises:
3 letters. 1958 and undated.
Carbon typescript paper on the Cultural Revolution. [1968].
A printed leaflet from the BCPIT. 1955.
Photocopied typescripts of two papers by Roland Berger, 'The Workers Seize Power at the Peking No. 2 Machinetool Factory', March 1967, and 'Comrade Sung talks about Factory Management Before and During the Cultural Revolution', October [possibly 1967];
Minutes of a meeting of the Liaison Committee of the 48 Group, 21 December 1967, including a verbal report by Roland Berger on his recent visit to China; together with a copy of 'China Trade and Economic Newsletter', #146 (December 1967), and a separate cyclostyled typed report by Roland Berger 'On the current phase of the Cultural Revolution', November-December 1967.