1William Thornton to Thomas Jefferson, 20 January 1812 (Jefferson Papers)
machines; spinning [index entry] machines; spinning billy [index entry]
2Enclosure: William Thornton to Thomas Jefferson, [ca. 9 May 1812] (Jefferson Papers)
machines; spinning [index entry]
3William Thornton to Thomas Jefferson, 27 June 1812 (Jefferson Papers)
machines; spinning [index entry]
4William Thornton to Thomas Jefferson, 13 July 1812 (Jefferson Papers)
machines; spinning [index entry]