1Bernard McMahon to Thomas Jefferson, 24 October 1812 (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
2Bernard McMahon to Thomas Jefferson, 1 December 1812 (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
3Enclosure: Thomas Jefferson’s Account with Joseph Milligan, [ca. 2 December 1811] (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
4Enclosure: Thomas Jefferson’s Catalogue of Books on Agriculture, [ca. 3 March 1817] (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
5Thomas Jefferson to William Coolidge, 24 January 1811 (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
6Enclosure: Thomas Jefferson’s Catalogue of Books on Agriculture, [ca. 16 December 1809] (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
7Thomas Jefferson: Book List, [after 6 October 1815] (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
8Thomas Jefferson to Mathew Carey, 21 June 1818 (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
9Mathew Carey & Son to Thomas Jefferson, 5 July 1818 (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]
10Mathew Carey & Son to Thomas Jefferson, 16 May 1818 (Jefferson Papers)
McMahon, Bernard; The American Gardener’s Calendar [index entry]