C.533-C.534: Accounts produced in accordance with the cephalosporin revenue sharing agreements, with related papers and correspondence, 1959-1963.

C.535-C.540: Copies of draft patent specifications for applications filed by Abraham, Guy Newton and the NRDC, 1959-1962.

C.541-C.545: Copies of typescript reports, some co-authored by Abraham, on developments in Cephalosporin C research, with other papers concerning patents, 1959-1962.