1Burwell Bassett to Thomas Jefferson, 20 July 1811 (Jefferson Papers)
mammoth; bones of found [index entry]
2Thomas Jefferson to Francis Adrian Van der Kemp, 17 January 1813 (Jefferson Papers)
mammoth; bones of found in Ky. [index entry]
3Caspar Wistar to Thomas Jefferson, 27 April 1815 (Jefferson Papers)
mammoth; bones of found [index entry]
4Thomas Jefferson to James W. Wallace, 30 October 1817 (Jefferson Papers)
mammoth; bones of found in Ky. [index entry]