Copy letter from Robert William Frederick Harrison, to Messrs Baird and Tatlock, 14 Cros Street, Hatton Garden, W.C. 'Dear Sirs, I shall be glad to know when I may expect to receive the materials ordered from you on January 6th, as they are required for despatch to Uganda by an early mail. Yours faithfully, Robt [Robert] Harrison Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 15 January 1904