D.164: Correspondence between Abraham and Chain mostly in connection with the former's preparation of the Royal Society Biographical Memoir of Florey, 1969.

D.165: Copies of Chain correspondence, 1969-1976. Letters by Chain to Sir Bernard Katz in which Chain complains of lack of recognition in Britain, 1969. Correspondence with Government ministers and leading scientists regarding issues in biochemical and general scientific research, 1971-1976. Correspondence with Sir Robert Robinson, mostly regarding the history of penicillin, March-May 1974.

D.166: Correspondence, mostly between Abraham and Sir Robert Robinson, concerning claims made by Chain about his role in the development of penicillin, April 1974-January 1975; 2 unrelated letters by Abraham and Chain (copy), 1969, 1979.

D.167-D.170: Miscellaneous typescript and printed material (some photocopies) and manuscript notes by Abraham relating to Chain's career and the development of penicillin.

D.171: Stock obituary of Chain for The Times.

D.172-D.177: 'Biologically Active Substances - exploration and exploitation', a symposium to mark Chain's 70th birthday held at the Royal Society, 15-16 June 1976. Correspondence regarding arrangements, with programme and a few letters arising, 1975, 1976. 'The Biosynthesis of B-lactam Antibiotics', Abraham's paper. 14pp manuscript draft with revisions, 2 typescript drafts, one incomplete, with manuscript revisions, and a copy of a 2pp typescript outline. Correspondence regarding publication of Abraham's paper in Biologically Active Substances - Exploration and Exploitation, edited by D.A. Hems, Wiley 1977.