Copy letter from Robert William Frederick Harrison, William Henry St John Hope, Society of Antiquaries 'I understand that you have now got possession of the lantern and that I may expect a cheque for £10 from your Society to complete the transaction. Shall I send you a bill, or will it do if I state the nature of the consideration on the receipt when I receive the cheque? Believe me, Faithfully yours, Robt Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 14 April 1897