Copy letter from Robert William Frederick Harrison to J H Sinclair, Glasgow and West of Scotland Technical College, Glasgow 'Dear Sir, Referring to your letter of October 11, the Society has no further copies in stock of the Separate Papers, Philosophical Transactions [of the Royal Society], which you name. You might, however, be able to obtain them of Messrs Dulau & Co., 37 Soho Square, London, W. The reference numbers are:- Trans. A 313, 1s.6d; Trans. A 326, 1s.6d.' 14 October 1910