1Enclosure: Thomas Jefferson’s Account with Joseph Milligan, [ca. 2 December 1811] (Jefferson Papers)
Wilson, Alexander; American Ornithology [index entry]
2Thomas Jefferson to Joseph Milligan, 5 October 1815 (Jefferson Papers)
Wilson, Alexander; American Ornithology [index entry]
3Thomas Jefferson to Joseph Milligan, 27 October 1815 (Jefferson Papers)
Wilson, Alexander; American Ornithology [index entry]