Ambassadors to the United States: Chronological Listing by Country
The information on foreign representation in the United States is drawn from records maintained by the Office of the Chief of Protocol. The Office's records contain information on foreign representation beginning in the late 19th century. Information on foreign representation prior to that time can be found in the records of the U.S. Department of State located at the U.S. National Archives and Records Administration in College Park, MD.
Also see other Foreign Embassy Information and Publications