Letter from Simon Newcomb, 1620 P Street, Washington D.C., to [Robert William Frederick] Harrison, Assistant Secretary of the Royal Society, London 'Dear Mr. Harrison:- I have you rletter of March 8, and shall hope soon to receive the volumes of Proceedings which you mention as having forwarded to me. I write now to express my warmest thanks for your very kind and courteous attention to my wishes. Yours very faithfully, Simon Newcomb'. 19 March 1907