Copy letter from Robert William Frederick Harrison, to H St J Donisthorpe, 58 Kensington Mansions, South Kensington, S.W. 'Soirée Dear Sir, It would be very convenient if you would kindly arrange yourself to provide small descriptive labels for your exhibit. We shall furnish a large card with the general title, and programme number. I am, faithfully yours, Robt [Robert] Harrison Assistant Secretary R.S. [Royal Society]'. 7 May 1907