Copy letter from Robert William Frederick Harrison, to T E Woodrow, London Library, St James's Square, S.W. The volume of 'Catalogue of Scientific Papers' which Professor [William Augustus] Tilden has given to the London Library is at last issued. Earlier volumes may be had from Messrs Clay & Sons, and if the Librarian can include Tilden, to act as an intermediary, the volumes, can be purchased at a considerable reduction. 1 July 1902