Copy letter from Robert William Frederick Harrison, to R Stewart Bain, Manager, London Electric Supply Corporation, 25a Cockspur Street, S.W. It is necessary to have a temporary supply of alternating current for experimental purposes at the approaching Soiree on 8 June. Asks for arrangements to be made, as in previous occasions. including the necessary connections to be made with the Post Office at the corner of the building. Can anticipate the permission of Mr Preece for this purpose. 25 May 1898