Letter from [?], Librarian of Manchester Geological & Mining Society, Queen's Chambers, 5 John Dalton Street, Manchester, to the Royal Society 'Dear Sir, In preparing for binding our set of your publications we find we lack he following:- Series B No 514. As we are particularly anxious to have this set complete, we would esteem it a favour if you would kindly let us have these missing parts. I am, Yours faithfully, [?]. P.S. We should also be obliged for any index or check list, with which we might index this series'. 20 December 1906