The documents that accompanied Madison’s message, published in the Washington National Intelligencer on 10 Mar. 1812 and reprinted as a Message from the President of the United States, transmitting Copies of Certain Documents obtained from a Secret Agent of the British Government, employed in Fomenting Disaffection to the Constituted Authorities, and In Bringing About Resistance to the Laws; and eventually, in Concert with a British Force, to Destroy the Union of the United States (Washington, 1812), and again in ASP description begins American State Papers: Documents, Legislative and Executive, of the Congress of the United States, 1832–61, 38 vols. description ends , Foreign Relations, 3:545–54, dated from 1809–12 and purported to show that John Henry, a former officer in the United States Army, had received instructions from the govr of canada, Sir James Craig, and approval from Robert Jenkinson, the earl of liverpool, for a secret mission to ascertain whether some northeastern states might secede from the Union in the event of an Anglo-American war. Madison and Secretary of State James Monroe negotiated the purchase of the pertinent papers from Henry for $50,000 and passage to France on an American warship (Samuel Eliot Morison, “The Henry-Crillon Affair of 1812,” Proceedings of the Massachusetts Historical Society 69 [1947/50]: 207–31; Madison, Papers description begins William T. Hutchinson, Robert A. Rutland, John C. A. Stagg, and others, eds., The Papers of James Madison, 1962– , 29 vols.: Congress. Ser., 17 vols.; Pres. Ser., 5 vols.; Sec. of State Ser., 7 vols description ends , Pres. Ser., 4:117n).