MACMILLAN, Harold, Lord Stockton, letters, autographs, documents, manuscripts Home | Archive | Facsimiles | Forgeries | Back MACMILLAN, Harold, Lord Stockton (1894-1987). Prime Minister 1957-1963. Signed postcard of the Brian Organ portrait, signed in the lower white border ('Stockton'). [No: 7015] This is the archived description of an item that has already been sold. Please contact me if you would like any further intormation.