1Thomas Jefferson to John Vaughan, 15 January 1816 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
2Patrick Gibson to Thomas Jefferson, 22 December 1815 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
3Thomas Jefferson to Robert Patterson, 22 December 1815 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
4Robert Patterson to Thomas Jefferson, 28 November 1815 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
5Robert Patterson to Thomas Jefferson, 24 October 1815 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
6Thomas Jefferson to Robert Patterson, 13 October 1815 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
7Robert Patterson to Thomas Jefferson, 25 August 1815 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
8Thomas Voigt to Thomas Jefferson, 3 September 1813 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
9Thomas Jefferson to Thomas Voigt, 20 May 1813 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
10Robert Patterson to Thomas Jefferson, 24 April 1813 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]