In 1956 the NRDC arranged for Glaxo to join in the research on Cephalosporin C, chiefly to find ways of increasing the yields of the antibiotic from strains of the cephalosporium fungus. This was achieved after much painstaking work involving repeated mutations of the mould. Glaxo's huge investment in the research bore fruit in 1964, with the introduction of its drug 'Ceporin' ('cephaloridine') into medicine.

C.882-C.889: Correspondence regarding cephalosporin nomenclature, 1957-1964.

C.890-C.897: Included at C.891 and C.892 are a draft and a later copy of the script of a Glaxo film entitled 'Antibiotic from the sea'. Abraham assisted in the production of the script and appeared in the film, though not as a speaker. Also included is correspondence regarding the Conference on Cephalosporidine at New College Oxford, 13-16 March 1967, which Abraham attended; at C.895 is a copy of a typescript of an introductory talk given by Abraham at the conference entitled 'Cephaloridine. Historical Remarks'.