F.26-F.31: 8th Italian National Congress of Chemotherapy held by the Società Italiana di Chemioterapia (Italian Society of Chemotherapy), Sardinia, 8-[?9 or 10] May 1970. Abraham was invited to give the opening lecture in a session on cephalosporins. Includes correspondence regarding arrangements and arising, a 12pp typescript draft of the lecture 'Reflections on the Development of the Cephalosporins', with corrections and revisions, a copy of the typescript of the lecture in Italian, a copy of the typescript of edited version with related photographs of chemical structures, and a copy of the galley proof with enclosing letter to Abraham.

F.32: Symposium on Antibiotics, Quebec, Canada, 1-3 March 1971. Organised by The Medicinal Chemistry Division of the Chemical Institute of Canada. Programme listing Abraham as a lecturer on 'Penicillins and Cephalosporins'.

F.33-F.36: FEBS Special Meeting on Industrial Aspects of Biochemistry, Dublin, Ireland, 15-19 April 1973. Abraham delivered a lecture at the symposium on 'Biological Syntheses'. Includes correspondence regarding arrangements and arising, 2pp copy of the typescript abstract of the lecture, an 11pp incomplete typescript draft of the lecture, with manuscript corrections, and a 20pp typescript draft, with manuscript corrections and revisions, entitled 'Penicillins, Cephalosporins and the Biosynthesis of Peptide Antibiotics by Fungi', by Abraham and Patricia Fawcett.

F.37: Penicillinase Workshop, University of Newcastle upon Tyne, 16-18 April 1975. Abraham introduced and chaired a panel discussion. Includes correspondence regrading arrangements, with programme.