1Thomas Jefferson to Robert Patterson, 11 September 1811 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
2Robert Patterson to Thomas Jefferson, 23 September 1811 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
3Thomas Jefferson to Robert Patterson, 10 November 1811 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
4Robert Patterson to Thomas Jefferson, 30 November 1812 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
5Thomas Jefferson to Robert Patterson, 27 December 1812 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
6Robert Patterson to Thomas Jefferson, 12 January 1813 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
7Robert Patterson to Thomas Jefferson, 25 March 1813 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
8Thomas Jefferson to Robert Patterson, 8 April 1813 (Jefferson Papers)
Patterson, Robert; and astronomical case clock [index entry]
9Thomas Jefferson to Thomas Voigt, 9 April 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]