Letter from Charles Todd to [Ronald] Winckworth, regarding a paper 'The photodynamic action of methylene blue on bacteriophage' by [Jean René] Perdrau and Todd Paper reference code: B.62 "I have spoken to Sir Henry Dale in the matter and told him that I should prefer to withdraw the paper in question, with a view to submitting it later together with a further, and complementary, communication". [Initially withdrawn, but later resubmitted, given the new reference B.95 and published in the 'Proceedings of the Royal Society of London' B, 1933]. 8 August 1932