D.23: 'The Chemistry of New Antibiotics', The American Journal of Medicine 39, 1965. 21pp copy of a typescript draft (including references and figures) with manuscript corrections, and a letter regarding publication.

D.24: Correspondence regarding an article which Abraham contributed to a 1963 volume dedicated to von Euler on the occasion of his 90th birthday (apparently later published in the Biochemical Journal), October-November 1962.

D.25-D.26: 'Enzymic Behaviour of the Cephalosporins', with L.D. Sabath, Enzymologia 29 (memorial volume to Professor H. von Euler), 1965. Correspondence regarding publication, with a 1p copy of the typescript 'summary' of the article and a copy of a typescript article for the 1963 volume (see D.24). 1965, 1966.

D.27: 'The Cephalosporins', with G.G.F. Newton, Advances in Chemotherapy 2, 1965. Proof with manuscript corrections and revisions, and correspondence regarding publication. See C.562 and C.563 for a draft of this paper.

D.28: Review for Nature (published in 1965): Advances in Drug Research, London 1964. Includes letters regarding publication, a 2pp copy of the typescript of the review, and a proof.

D.29-D.30: 'Experiments relating to the Biosynthesis of Bacilysin', with Joan Roscoe, Biochemical Journal 99, 1966. D.29 contains a 21pp copy of a typescript draft (with references and figures) with manuscript revisions. D.30 contains a later copy of a typescript draft with manuscript corrections.

D.31: Review for British Medical Journal: Biochemical Studies of Antimicrobial Drugs, Cambridge University Press 1966. Includes correspondence regarding publication and a 2pp copy of the typescript of the review, with manuscript corrections.

D.32: 'The Cephalosporin C Group', Chemical Society Quarterly Reviews 21, No. 2, 1967. Proof with manuscript corrections.