A (Allies) - United States of America Various papers including report of Captain J A Leeming, as Trench Warfare representative with British Mission to the United States; photographs of tests of coal dust as an explosive; Foreign Office telegrams, mainly to and from Sir Cecil Spring Rice, British Ambassador to the United States, on munitions supply; Sir Ernest Moir on his resignation from the American Department; Telegrams from 1st Lord Northcliffe [earlier Alfred Harmsworth], head of British Mission to United States, on subjects including access by Sir William Wiseman to the President of the United States [Woodrow Wilson] and Colonel House and delays at the embassy (4); telegrams from C B Gordon, Head of Ministry affairs in Washington; Christopher Addison, Parliamentary Secretary to WSC, on the provision of cabling by Morgans and the transmission of confidential information to the United States; and Mansfield Cumming [Chief of the Secret Service] discussing use of his codes by Lord Northcliffe.