Observations on the commerce of the American states with Europe and the West Indies : including the several articles of import and export. : Also, an essay on canon and feudal law. By John Adams, Esquire; ambassador plenipotentiary, from the United and Independent States of North America, to Their High Mightinesses the States General of the United Provinces of Holland. : To which is annexed, the political character of the said John Adams, Esquire; by an American. : Price half a dollar.