F.68-F.71: Hoechst Workshop Conference on 'Regulation of Secondary Metabolite Formation', Schloss Gracht, Germany, 12-16 May 1985. Abraham gave a lecture 'Enzymes Involved in Penicillin and Cephalosporin Formation'. Includes correspondence regarding arrangements and arising, a 3pp incomplete manuscript draft of Abraham's lecture with revisions' and a 14pp typescript of the lecture with additional pages of bibliographic references for possible publication.

F.72-F.74: 17th FEBS Meeting, West Berlin, 24-29 August 1986. Abraham gave a lecture entitled 'Beta lactamases' at one of the Meeting's symposia. Includes correspondence regarding arrangements and arising, a 1p manuscript draft outline of the lecture, an 18pp typescript of the lecture, with manuscript corrections, and additional typescript pages and figures.