Letter from Howard Walter Florey to A Landsborough Thomson, Medical Research Council, London Matter raises question of general interest to research workers - Council took over administration of exchange of penicillin information - not entitled to exclude research workers from discussions on publication, which seriously affects them - discusses choice of representatives for American discussions on penicillin - reputation of many younger workers depends on getting a clear understanding with the Americans about the publication position - asks if Americans would accept Chain as a third official representative on penicillin only - discusses agreement with Americans about publication of penicillin information. 10 July 1945