Copy letter from A H White, to Major G C Challen, 17 Ironmonger Lane, Cheapside, E.C. With reference to Challen's letter of the previous day addressed to Dr [Michael] Foster, the Society has several copies of Sprat's 'History of the Royal Society' but if Challen would care to send his copy of the third edition to the Society they could then see in what respect it differs from the first and fourth editions in the library. 2 September 1897