Copy letter from Robert William Frederick Harrison, to Maikoo Lall, Ganeshganj, Lucknow, India 'Sir, I have to acknowledge the receipt of your letter of the 3rd June addressed to the Secretary of the Royal Society, together with two copies of your pamphlet "A Treatise on Cholera, Fever and Small-Pox, their Origin and Remedy". I am, Yours faithfully, Robt Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 9 July 1897