Letter from [Frederick George] Donnan, Chemical Laboratory, University College, Gower Street, W.C, to Mr [Robert] Harrison, [Royal Society] Asking, on behalf of Professor Haber, of the Kaiser Wilhelm Institute, Berlin, whether he can purchase the less recent copies of the Proceedings and Transactions of the Royal Society and whether the Royal Society would exchange any of its current publications for the publications of Professor Haber's institute. 12 May 1913