1Thomas Jefferson to James Wilkinson, 25 June 1818 (Jefferson Papers)
Wilson, Alexander; and western exploration [index entry]
2James Wilkinson to Thomas Jefferson, 4 August 1818 (Jefferson Papers)
Wilson, Alexander; and western exploration [index entry]
3Thomas Jefferson to Henry Dearborn, 27 October 1818 (Jefferson Papers)
Wilson, Alexander; and western exploration [index entry]
4Henry Dearborn to Thomas Jefferson, 6 November 1818 (Jefferson Papers)
Wilson, Alexander; and western exploration [index entry]