Copy letter from Robert William Frederick Harrison, to J Bradshaw, 3 Richmond Terrace, Armagh 'Dear Sir, The Paper by Messrs Hall & Miller to which you refer was published in Proceedings of the [Royal] Society, Series B, No. 514, and at the price of three shillings. It can be obtained on application to Messrs Harrison & Sons, 45St Martin's Lane, London W.C. I am, faithfully yours, Robt [Robert] Harrison Assistant Secretary R.S. [Royal Society]'. 13 March 1906