Copy letter from Robert William Frederick Harrison, to Professor William Cawthorne Unwin, Fellow of the Royal Society 'Dear Professor Unwin, I am directed to ask if you will be so good as to write, for the "Proceedings [of the Royal Society]", an obituary notice of Sir Benjamin Baker, whose death was reported to the President and Council at their Meeting yesterday. Believe me, very truly yours, Robt [Robert] Harrison'. 31 May 1907