Letter from A G Gaydon, to Sir Henry Thomas Tizard [Royal Society] 'Chemical Engineering Dept [Department], Imperial College, London S.W.7 Dear Sir Henry, Thank you very much for your letter of March 22 congratulating me on award of the Warren Fellowship. The good news is a great relief to me. Not only will it give more security to my wife and daughter, but the longer term will enable me to plan my research over a longer period. With all kind wishes and many thanks, Yours sincerely, A.G. Gaydon' 26 November 1945