1Richard Claiborne to Thomas Jefferson, 4 July 1817 (Jefferson Papers)
inventions; duck-foot paddle [index entry]
2Thomas Jefferson to Richard Claiborne, 10 May 1818 (Jefferson Papers)
inventions; duck-foot paddle [index entry]
3Richard Claiborne to Thomas Jefferson, 29 [August] 1818 (Jefferson Papers)
inventions; duck-foot paddle [index entry]