Copy letter from an unknown correspondent, to Messrs Harrison & Sons 'Account sales [underlined]. In your statement of Stock on hand we find, Proc. ['Proceedings of the Royal Society'] Vol. [Volume] XLIV., no. in stock given = 2, but one is entered as sold, so your entry should be for 1 copy in stock. We do not appear to have sent you any during the past year so as to alter the above figures. Proc. Vol. XLVI. Stock 1890 = 3 " 1891 = 2 but you do not show that any copy was sold so as to make the stock less. Please let us know how these volumes stand with you'. 9 November 1891