"United States" . . "1789 - 1809" . . . . . . . . . . . . . "Thomas Jefferson and James Thomson Callender, 1798-1802"@en . "Thomas Jefferson and James Thomson Callender, 1798-1802" . . . "Records and correspondence"@en . . "Thomas Jefferson & James Thomson Callender, 1798-1802, [a collection of letters]"@en . "Sources" . "History"@en . "Sources"@en . . . . . . . . "1797 - 1801" . .