Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to the Cooper Laboratory, Rickmansworth Road, Watford, Herts 'In answer to your enquiry of the 7th instant, we are unable to supply sets of the Sleeping Sickness Reports, as they are not on sale at the Society's office; but they may be obtained through any bookseller from Messrs Harrison & Sons, 45 ST Martin's Lane, WC, and for the later Reports from Messrs Wyman & Sons, Fetter Lane, EC, as per attached advertisement [no enclosure]. The Reports are now published by HM Stationery Office No XVI is now going through the press. Some of the earliest may possibly now be exhausted.' 9 December 1914