H.382: Correspondence with Japanese scientists, 1953-1954, 1961-1962.

H.383-H.388: Correspondence and papers regarding the IUPAC Symposium on 'The Chemistry of Natural Products' Kyoto, 12-18 April 1964

H.389: Correspondence with Japanese scientists, 1965-1966.

H.390: Correspondence with Japanese scientists, 1967. Includes papers regarding the Journal of Antibiotics.

H.391: Correspondence with Japanese scientists, 1968-1969.

H.392-H.394: Correspondence with Japanese scientists and others, 1970-1973.

H.395-H.400: Correspondence and papers regarding visit to Japan and the USA, 1974. Abraham attended the First Intersectional Congress of the International Association of Microbiological Societies in Tokyo in early September and then flew to San Francisco for the Fourteenth Interscience Conference on Antimicrobial Agents and Chemotherapy.

H.401: Correspondence with Japanese scientists, 1974-1977.