1Thomas Jefferson to Mathew Carey, 21 June 1818 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
2Thomas Jefferson to Alexander von Humboldt, 6 December 1813 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
3John Vaughan to Thomas Jefferson, 30 July 1817 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
4James Wilkinson to Thomas Jefferson, 4 August 1818 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
5Alexander von Humboldt to Thomas Jefferson, 20 December 1811 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
6David Bailie Warden to Thomas Jefferson, 16 January 1811 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
7Mathew Carey & Son to Thomas Jefferson, 27 June 1818 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
8Samuel Pleasants to Thomas Jefferson, 17 August 1813 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
9Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 25 January 1812 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...
10Thomas Jefferson to Samuel Pleasants, 11 August 1813 (Jefferson Papers)
Pike, Zebulon Montgomery; An Account of Expeditions to the Sources of the Mississippi [index...