1Charles Clay to Thomas Jefferson, 18 December 1811 (Jefferson Papers)
surveying; and chain [index entry]
2Thomas Jefferson to Alden Partridge, 2 January 1816 (Jefferson Papers)
surveying; and chain [index entry]
3Thomas Jefferson to Alexander J. Dallas, 26 February 1816 (Jefferson Papers)
surveying; and chain [index entry]
4John Wood to Thomas Jefferson, 6 April 1816 (Jefferson Papers)
surveying; and chain [index entry]
5Thomas Jefferson to Wilson Cary Nicholas, 19 April 1816 (Jefferson Papers)
surveying; and chain [index entry]
6John Wood to Thomas Jefferson, 2 August 1816 (Jefferson Papers)
surveying; and chain [index entry]