Copy letter from Herbert Rix, to Andrew W Tuer, 50 Leadenhall Street, E.C. 'Dear Sir, In answer to your memo. [memorandum] of the 22nd, we have no specimen of a horn book in this library, but I remember to have seen one at the house of our Treasurer (Sir John Evans), Nash Mills, Hemel Hempstead. Yours truly, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 24 November 1893