Letter from A E Schidt, Librarian, The Rockefeller Institute for Medical Research, 66th Street and Avenue A, New York, to the Secretary of the Royal Society, London 'Dear Sir:- We were delighted with the generous gift of so many volumes of the Proceedings of the Royal Society for the Rockefeller Institute library, but wish now to complete our set, if possible. Will you have the kindness to inform me if we can obtain the following volumes through the Royal Society, or, if you cannot supply them, will you suggest some dealer to whom we might apply? Volumes, 3, 6 to 15, 21 to 22, 51, 70. Thanking you for the favour of an early reply. I am, Yours truly, A.E.Schidt'. 27 February 1907