1Thomas Jefferson to Joseph Milligan, 11 August 1815 (Jefferson Papers)
books; on latitude and longitude [index entry]
2Thomas Jefferson to Joseph Milligan, 17 August 1815 (Jefferson Papers)
books; on latitude and longitude [index entry]
3Thomas Jefferson to Joseph Milligan, 5 October 1815 (Jefferson Papers)
books; on latitude and longitude [index entry]
4Thomas Jefferson: Book List, [after 6 October 1815] (Jefferson Papers)
books; on latitude and longitude [index entry]
5Thomas Jefferson to Joseph Milligan, 22 December 1815 (Jefferson Papers)
books; on latitude and longitude [index entry]
6Thomas Jefferson to Nicolas G. Dufief, 17 May 1816 (Jefferson Papers)
books; on latitude and longitude [index entry]
7Thomas Jefferson to Nicolas G. Dufief, 9 June 1816 (Jefferson Papers)
books; on latitude and longitude [index entry]