1Thomas Jefferson to Silvain Godon, 21 May 1810 (Jefferson Papers)
mineralogy; and S. Godon [index entry]
2Silvain Godon to Thomas Jefferson, 18 June 1810 (Jefferson Papers)
mineralogy; and S. Godon [index entry]
3Thomas Jefferson to Wilson Cary Nicholas, 19 April 1816 (Jefferson Papers)
mineralogy; and S. Godon [index entry]
4Thomas Cooper to Thomas Jefferson, 16 September 1817 (Jefferson Papers)
mineralogy; and S. Godon [index entry]
5Enclosure: Report on Thomas Cooper’s Collection of Minerals, 9 July 1819 (Jefferson Papers)
mineralogy; and S. Godon [index entry]