Correspondence with A. Franc (Paris) that cannot find the specimens, 14 November 1950-27 November 1950 Date: 1950-11-14/1950-11-27
Correspondence with A.J. Berry (University of Malaya) re freshwater medusae, 10 Oct. 1961; 14 Nov., 16 Oct., 10 Oct. 1962 Date: 10 Oct. 1961; 14 Nov., 16 Oct., 10 Oct. 1962
Correspondence with Bernard C. Cotton (University of Adelaide, South Australian Museum) (27p.), 23 May 1956-19 April 1966 Date: 1956-05-23/1966-04-19
Correspondence with B.J. Smith (National Museum of Victoria), 1 Sept., 15 July, 27 May, 15 May, 20 May 1969 Date: 1 Sept., 15 July, 27 May, 15 May, 20 May 1969