Copy letter from Robert William Frederick Harrison, to Professor W R Hodgkinson, Ordnance College, Red Barracks, Woolwich Harrison declines Hodgkinson's offer of photographs for the Royal Society's forthcoming Soirée, as their programme is already too full. A note has been made of the offer for the consideration of the Soirée Committee, so it may be considered for the June Conversazione. 4 May 1904