D.247-D.250: 'Selective Reminiscences of B-Lactam Antibiotics. Early Research on Penicillin and Cephalosporins', for 'Roots' column, BioEssays: Advances in Molecular, Cellular and Developmental Biology, Vol. 12, No. 12, December 1990. (The 'Roots' column presented first-hand accounts of key discoveries or breakthroughs in the biological sciences.) Correspondence, drafts, etc.

D.251-D.252: Review for Nature: Miracle Cure. The Story of Antibiotics, by Milton Wainwright, Blackwell, 1990. Correspondence, drafts, etc.

D.253: 'Possible Intermediates in the Biosynthesis of Cephalosporin', with G.G.F. Newton. Copy of an 11pp typescript draft so entitled, with manuscript corrections.

D.254: 'The Cephalosporins'. Copy of an 8pp typescript draft with manuscript revisions.

D.255: 'Enzymes Involved in the Biosynthesis of Cephalosporin C'. Copy of a 7pp typescript draft, so entitled, with manuscript corrections.

D.256: 'Biosynthesis of Penicillins and Cephalosporins', with G.G.F. Newton. Copy of a 40pp typescript draft, with manuscript corrections, and index of subjects.

D.257-D.258: 'B-Lactamases and their Rôle in Resistance to B-Lactam Antibiotics'. 58pp copy of a typescript draft so entitled, with figures.