1Memorandum by Thomas Eston Randolph, 23 July [August?] 1812 (Jefferson Papers)
machines; threshing [index entry]
2Thomas Jefferson to Joel Yancey, 7 June 1815 (Jefferson Papers)
machines; threshing [index entry]
3Thomas Jefferson to Alexander Hepburn, 7 August 1819 (Jefferson Papers)
machines; threshing [index entry]
4Thomas Jefferson to Cunningham Harris, 6 November 1812 (Jefferson Papers)
machines; threshing [index entry]
5Thomas Jefferson to Jeremiah A. Goodman, 17 June 1813 (Jefferson Papers)
machines; threshing [index entry]
6Thomas Jefferson’s Calculation of Timber Needed by Alexander Hepburn at Poplar Forest, [ca. 8 October 1819] (Jefferson Papers)
machines; threshing [index entry]
7Thomas Jefferson to Charles A. Scott, 9 February 1811 (Jefferson Papers)
machines; threshing [index entry]
8Joel Yancey to Thomas Jefferson, 8 October 1819 (Jefferson Papers)
machines; threshing [index entry]
9Thomas Jefferson to Joel Yancey, 12 May 1820 (Jefferson Papers)
machines; threshing [index entry]
10Thomas Jefferson to Benjamin B. Ford, 28 November 1809 (Jefferson Papers)
machines; threshing [index entry]