Copy letter from Michael Foster, to Professor Samuel Pierpont Langley, [Foreign Member, Royal Society] 'My dear Prof. Langley, The Smithsonian Institution is, on historical ground, so closely connected with the efforts of the Royal Society in Cataloguing Scientific Papers, that I am directed to add to the circular letter herewith sent, a few words expressing the hope of the Committee of the Royal Society which has the matter in hand that they may have, in a special way, the assistance of your valuable body in coming to a decision on so important a question. Believe me, (signed) M. Foster Sec. R.S. [Secretary, Royal Society]'. 31 March 1894