Letter from Sir [Joseph] Austen Chamberlain (58 Rutland Gate [London]) to WSC, informing him that he had signed and sent a letter [jointly from himself and WSC, on the need for an enquiry on air defence] to the Prime Minister [James Ramsay MacDonald], with a covering note.Chamberlain also says that the second volume of WSC's biography of the 1st Duke of Marlborough had formed his Christmas reading, and had fascinated him: "What a man!".