Letter from Donald Gregory at 10 Ainsle Place, to Mountstuart Elphinstone, enclosing receipts for the entry money and annual subscription to the Iona Club
Letter from John Dougan & Co from the Office of the Respirator, to Mountstuart Elphinstone, with enclosures regarding an account of the action and principle of the respirator invented by Mr Jefferys, testimonials, price, structure and so on