1John B. Colvin to Thomas Jefferson, 28 February 1810 (Jefferson Papers)
Washington City,
2John B. Colvin to Thomas Jefferson, 14 September 1810 (Jefferson Papers)
Washington City,
3John B. Colvin to Thomas Jefferson, 4 February 1811 (Jefferson Papers)
Washington City,
4John B. Colvin to Thomas Jefferson, 1 August 1812 (Jefferson Papers)
Washington City,
5John B. Colvin to Thomas Jefferson, 26 March 1813 (Jefferson Papers)
Washington City,