Copy letter from Robert William Frederick Harrison, to William Henry Mahoney Christie, Fellow of the Royal Society 'Dear Sir, I beg to acknowledge the receipt of 7 copies of the Report of the Colaba Observatory for 1898/99 for the use of the Indian Observatories Committee at their meeting on November 6th. I am, Yours faithfully, Robt Harrison Assist. Sec. R. S. [Assistant Secretary]'. 28 October 1899