Contents of a file inscribed 'Penicillin History..Pen Reports..Oxford University'. Copies of typescript reports, 1942-1944. Most of the reports are from the 'PEN.C' series. Included at C.205 is brief correspondence between Sir Robert Robinson and Sir Edward Mellanby, 1943.

Notes in an unidentified hand: mostly regarding experiments involving B. Subtilis and ayfivin; a few other notes from back regarding experiments on an antibiotic produced by Staphaur[?eus].

Notes in the same hand as MS. Abraham 32/C.207. Mostly regarding experiments involving ayfivin, continued from MS. Abraham 32/C.207; a few other notes from the back; 1 loose page of notes the at front dated June 1946.