"United States" . . "United States." . . . . . "U.S. territorial papers"@en . "Vol. 1-28 cover the administrative history of the following territories: Northwest, Southwest, Mississippi, Indiana, Orleans, Michigan, Louisiana-Missouri, Illinois, Alabama, Arkansas, Florida, Wisconsin."@en . . . . . . . . . . . "The Territorial papers of the United States"@en . "Periodicals"@en . "The Territorial papers of the United States" . . . . "History"@en . . . . . . . "History" . . . . "Sources"@en . "Sources" . "Territorial expansion." . . "United States. National Archives and Records Service." . .