1Thomas Jefferson to James Eastburn & Company, 2 April 1819, with Jefferson’s Note (Jefferson Papers)
Bailey, Nathan (Nathaniel); An Universal Etymological English Dictionary [index entry]
2Thomas Jefferson to James Eastburn & Company, 3 May 1819 (Jefferson Papers)
Bailey, Nathan (Nathaniel); An Universal Etymological English Dictionary [index entry]
3Thomas Jefferson to John Adams, 15 August 1820 (Jefferson Papers)
Bailey, Nathan (Nathaniel); An Universal Etymological English Dictionary [index entry]