1Oliver Pollock to Thomas Jefferson, 23 April 1811 (Jefferson Papers)
Clark (Clarke), George Rogers; 1779expedition of [index entry]
2Oliver Pollock to Thomas Jefferson, 19 November 1811 (Jefferson Papers)
Clark (Clarke), George Rogers; 1779expedition of [index entry]
3Thomas Jefferson to Oliver Pollock, 31 December 1811 (Jefferson Papers)
Clark (Clarke), George Rogers; 1779expedition of [index entry]
4Oliver Pollock to Thomas Jefferson, 28 March 1812 (Jefferson Papers)
Clark (Clarke), George Rogers; 1779expedition of [index entry]
5Thomas Jefferson to Oliver Pollock, 19 April 1812 (Jefferson Papers)
Clark (Clarke), George Rogers; 1779expedition of [index entry]
6Josiah Meigs to Thomas Jefferson, 25 August 1813 (Jefferson Papers)
Clark (Clarke), George Rogers; 1779expedition of [index entry]
7Thomas Jefferson to Louis H. Girardin, 15 January 1815 (Jefferson Papers)
Clark (Clarke), George Rogers; 1779expedition of [index entry]