Note from John Martin [Prime Minister's Private Secretary] to WSC informing him that Sir Richard Hopkins [Permanent Secretary of the Treasury and Head of the Civil Service] has been ordered by the doctor to take 3 weeks' rest and that Sir Alan Barlow [Joint Second Secretary, Treasury] will be taking over his position whilst he is away and enclosing a draft letter to Hopkins [see CHAR 20/96B/150] for him to consider Initialled.