1Thomas Jefferson to John Armstrong, 6 March 1809 (Jefferson Papers)
He was commissioned a brigadier general during the War of 1812 and became
2William Henry Harrison to John Armstrong, 15 September 1813 (Abstract) (Madison Papers)
Naval War of 1812
3James Wilkinson to John Armstrong, 7 January 1814 (Madison Papers)
U.S. Army in the War of 1812,
4From James Madison to John Armstrong, 15 June 1814 (Madison Papers)
U.S. Army in the War of 1812,
5From James Madison to John Armstrong, 18 June 1814 (Madison Papers)
Naval War of 1812,
6From James Madison to John Armstrong, 18 July 1814 (Madison Papers)
U.S. Army in the War of 1812,
7From James Madison to John Armstrong, [13 August 1814] (Madison Papers)
: War of 1812 Manuscripts);
8From James Madison to John Armstrong, 19 August 1814 (Madison Papers)
U.S. Army in the War of 1812,