Letter from T Duffield Hawkin, [Honorary Secretary] Atlantic Union, 13A Cockspur Street, Trafalgar Square, S.W, to Sir Archibald Geikie, [Royal Society] Referencing a previous conversation, enquires about sending a list of prominent American and Colonial visitors passing through London for the Royal Society's two Conversaziones. Seeks information about the dates of these functions and express his intention of sending suitable names for invitations. 23 April 1910