| Description | Letters, mostly bound in guardbooks, sent and received by the Society, [1807]-1960, comprising:
Letters relating to Fellows and Foreign Members, [1807]-1902; Post (letters) and Parcel Books, listing addressees and cost of postage, 1935-1951; Incoming letters to the Assistant Secretary or Honorary Secretary, 1834-1960; Flimsy copies of the outgoing letters from the Assistant Secretary, later Permanent Secretary, 1845-1954; Flimsy copies of letters sent from Society staff, latterly the Treasurer, financial matters, 1897-1955. |