1Benjamin B. Ford to Thomas Jefferson, 17 November 1809 (Jefferson Papers)
agriculture; threshing machines [index entry]
2Thomas Jefferson to Benjamin B. Ford, 28 November 1809 (Jefferson Papers)
agriculture; threshing machines [index entry]
3Thomas Jefferson to James Madison, 9 August 1810 (Jefferson Papers)
agriculture; threshing machines [index entry]
4Thomas Jefferson to James Walker, 11 January 1811 (Jefferson Papers)
agriculture; threshing machines [index entry]
5Thomas Jefferson’s Constitution for Proposed Agricultural Society of Albemarle, [ca. 1 February 1811] (Jefferson Papers)
agriculture; threshing machines [index entry]
6Thomas Jefferson to Charles A. Scott, 9 February 1811 (Jefferson Papers)
agriculture; threshing machines [index entry]
7Charles Willson Peale to Thomas Jefferson, 19 August 1812 (Jefferson Papers)
agriculture; threshing machines [index entry]
8Memorandum by Thomas Eston Randolph, 23 July [August?] 1812 (Jefferson Papers)
agriculture; threshing machines [index entry]
9Cunningham Harris to Thomas Jefferson, 30 September 1812 (Jefferson Papers)
agriculture; threshing machines [index entry]
10Thomas Jefferson to Cunningham Harris, 6 November 1812 (Jefferson Papers)
agriculture; threshing machines [index entry]
11Charles Willson Peale to Thomas Jefferson, 28 December 1813 (Jefferson Papers)
agriculture; threshing machines [index entry]
12Thomas Jefferson to Jeremiah A. Goodman, 6 January 1815 (Jefferson Papers)
agriculture; threshing machines [index entry]
13Thomas Jefferson to Charles Willson Peale, 21 March 1815 (Jefferson Papers)
agriculture; threshing machines [index entry]
14Charles Willson Peale to Thomas Jefferson, 2 May 1815 (Jefferson Papers)
agriculture; threshing machines [index entry]
15Thomas Jefferson to Joel Yancey, 7 June 1815 (Jefferson Papers)
agriculture; threshing machines [index entry]
16Thomas Jefferson to Charles Willson Peale, 13 June 1815 (Jefferson Papers)
agriculture; threshing machines [index entry]
17Thomas Jefferson to Charles Willson Peale, 8 May 1816 (Jefferson Papers)
agriculture; threshing machines [index entry]
18Thomas Jefferson to Archibald Thweatt, 16 March 1817 (Jefferson Papers)
agriculture; threshing machines [index entry]
19Thomas Jefferson to Alexander Hepburn, 7 August 1819 (Jefferson Papers)
agriculture; threshing machines [index entry]
20Joel Yancey to Thomas Jefferson, 26 September 1819 (Jefferson Papers)
agriculture; threshing machines [index entry]
21Alexander Hepburn’s List of Materials for Work at Poplar Forest [ca. 8 October 1819] (Jefferson Papers)
agriculture; threshing machines [index entry]
22Thomas Jefferson’s Notes on Alexander Hepburn’s Poplar Forest Materials List, [ca. 8 October 1819] (Jefferson Papers)
agriculture; threshing machines [index entry]
23Thomas Jefferson’s Calculation of Timber Needed by Alexander Hepburn at Poplar Forest, [ca. 8 October 1819] (Jefferson Papers)
agriculture; threshing machines [index entry]
24Joel Yancey to Thomas Jefferson, 8 October 1819 (Jefferson Papers)
agriculture; threshing machines [index entry]
25Joel Yancey to Thomas Jefferson, 14 October 1819 (Jefferson Papers)
agriculture; threshing machines [index entry]
26Thomas Jefferson to John H. Peyton, 17 December 1819 (Jefferson Papers)
agriculture; threshing machines [index entry]
27Thomas Jefferson to Joel Yancey, 12 May 1820 (Jefferson Papers)
agriculture; threshing machines [index entry]
28Thomas Jefferson to Alexander Hepburn, 20 May 1820 (Jefferson Papers)
agriculture; threshing machines [index entry]