1Thomas Voigt to Thomas Jefferson, 3 September 1813 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
2Thomas Jefferson to Robert Patterson, 10 November 1811 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
3Thomas Jefferson to Thomas Voigt, 20 May 1813 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
4Robert Patterson to Thomas Jefferson, 23 September 1811 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
5Robert Patterson to Thomas Jefferson, 25 August 1815 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
6Thomas Jefferson to Thomas Voigt, 9 April 1813 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
7Thomas Voigt to Thomas Jefferson, 1 July 1813 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
8Thomas Jefferson to Robert Patterson, 8 April 1813 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
9Robert Patterson to Thomas Jefferson, 24 April 1813 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]
10Thomas Jefferson to Robert Patterson, 29 May 1812 (Jefferson Papers)
clocks; TJ’s astronomical case clock [index entry]