Copy letter from Robert William Frederick Harrison, to Dr Armstrong, Fellow of the Royal Society 'Dear Dr Armstrong, Both Dr [Michael] Foster and Dr [David] Sharp have led me to expect from you a Memorandum which is to be printed and circulated to the members of Intern. Catal. [International Catalogue] Committee for their next meeting. I have nothing yet from you, and send this, therefore, as a reminder, as the summonses will be going out in a few days and the Memorandum will, apparently, take some time to set up and revise. I am, yours faithfully, Robt Harrison Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 13 February 1897