Carbon copies of Chain's outgoing correspondence, January-July 1945

Includes draft letter to F.G. Young, 25 February, commenting on recently published paper by Glaxo workers on preparation of purified penicillin, letter to Mellanby, 10 March, re restrictions on publication of penicillin work and 2 letters to Sir Henry Tizard, 3 and 17 July, re the public view of the role of the Oxford workers in the penicillin story.