Letter from F.F Renwick, 35 Russell Square, London, W.C, to The Honorary Secretaries, The Royal Society, Burlington House, Piccadilly, W Discusses the history and significance of the International Congresses of Photography, which aim to bring together individuals interested in photography to discuss technical, scientific, and artistic matters. Mentions the upcoming Congress in London in the summer of the following year, organised in cooperation with the Permanent International Committee based in Paris. The Royal Photographic Society is tasked with forming a committee to collaborate with the Permanent International Committee for organising the London Congress. Extends an invitation to the Royal Society's council to appoint a representative to serve on the British Organising Committee of the International Congress of Photography 1915 and encourages them to engage the Society's fellows in the Congress. Eemphasises the importance of a prompt response and requests the name and address of the appointed representative. 4 May 1914