1Memorandum to Jeremiah A. Goodman, 8 September 1813 (Jefferson Papers)
agriculture; manure as fertilizer [index entry]
2Charles Willson Peale to Thomas Jefferson, 2 March 1812 (Jefferson Papers)
agriculture; manure as fertilizer [index entry]
3Charles Willson Peale to Thomas Jefferson, 3 August [October] 1811 (Jefferson Papers)
agriculture; manure as fertilizer [index entry]
4Charles Willson Peale to Thomas Jefferson, 28 December 1813 (Jefferson Papers)
agriculture; manure as fertilizer [index entry]