Copy letter from Robert William Frederick Harrison to W G Bishop, Printing Branch, H W Stationery Office 'Dear Sir, In reply to your letter of yesterday with reference to the loan of half-tone blocks illustrating Messrs Plimmer & Thomson's reports on "The treatment of trypanosomasis in rats", as the original blocks will hardly bear the impression of another edition, I will order our printers, Messrs Harrison & Sons, to prepare and send electros to the Stationery Office. The cost of these electros will be trifling.' 11 March 1908