11Thomas Jefferson to Nicolas G. Dufief, 14 December 1816 (Jefferson Papers)
books; on astronomy [index entry]
12John Adams to Thomas Jefferson, 16 December 1816 (Jefferson Papers)
books; on astronomy [index entry]
13Nicolas G. Dufief to Thomas Jefferson, 7 January 1817 (Jefferson Papers)
books; on astronomy [index entry]
14Thomas Jefferson to Nicolas G. Dufief, 24 January 1817 (Jefferson Papers)
books; on astronomy [index entry]
15Enclosure: Thomas Jefferson’s Account with Nicolas G. Dufief (Jefferson Papers)
books; on astronomy [index entry]
16Nathaniel Bowditch to Thomas Jefferson, 30 March 1818 (Jefferson Papers)
books; on astronomy [index entry]
17Thomas Jefferson to Nathaniel Bowditch, 11 April 1818 (Jefferson Papers)
books; on astronomy [index entry]
18John Cook to Thomas Jefferson, 20 April 1818 (Jefferson Papers)
books; on astronomy [index entry]
19Thomas Jefferson to John Cook, 21 May 1818 (Jefferson Papers)
books; on astronomy [index entry]
20Nathaniel Bowditch to Thomas Jefferson, 20 August 1818 (Jefferson Papers)
books; on astronomy [index entry]