Copy letter from Robert William Frederick Harrison, to Sir Oliver Lodge, Fellow of the Royal Society, Mariemont, Edgbaston 'Memo [Memorandum] Catalogue of Sci. [Scientific] Papers Vol. [Volume] XII Supplementary Volume is the last issued (for statement of scope, see Preface to Vol IX). Messrs Clay & Sons, University Press & Warehouse, Fetter Lane, E.C. sell the volumes. The preparation of further parts of the Catalogue is going on'. [17 April 1907]