Copy letter from Robert William Frederick Harrison to G [George] G [Gerald] Stoney FRS, Oakley, Heaton Road, Newcastle-on-Tyne 'With reference to the portrait of your late father accompanying Professor Joly's obituary notice, and to your letter of January 4th, I dare say you have by now received from out printers your private copies of the complete biography. May I therefore send on the engraver's invoice for the portraits, and suggest that at your convenience you send me your cheque for the amount, £4.10.0, drawn in favour of "The Royal Society". Perhaps you would kindly return the engraver's invoice at the same time.' 13 March 1912