Copy letter from Robert William Frederick Harrison, to Professor William Dobinson Halliburton, Fellow of the Royal Society 'I have been asked by Dr. [Michael] Foster to write for him to ascertain whether you will be kind enough to undertake to write the obituary notice of the late Sir George Johnson for the Royal Society's "Proceedings". Dr. Foster believes that you had an intimate knowledge of Sir George Johnson and his work. I am, Yours faithfully Robt Harrison Asst. Sec. R. S. [ASsistant Secretary, Royal Society]'. 23 June 1896