Letter from the County Council of the West Riding of Yorkshire, Public Health Laboratory, County Hall, Wakefield to Henry Hallett Dale, President of the Royal Society 'Dear Sir Henry, I shall be grateful if you will give your signature to the enclosed application for a licence for the performance of experiments on animals.' Yours sincereley, Hedwig Reisser, M.D.'. [Annotated by Dale as forwarded to Robinson with recommendation for signature, as apparently in order]. 14 January 1946