1Thomas Cooper to Thomas Jefferson, 10 May 1810 (Jefferson Papers)
Werner, Abraham Gottlob; mineralogical theories of [index entry]
2Joseph C. Cabell to Thomas Jefferson, 23 July 1810 (Jefferson Papers)
Werner, Abraham Gottlob; mineralogical theories of [index entry]
3Robert Bakewell to Thomas Jefferson, 23 December 1810 (Jefferson Papers)
Werner, Abraham Gottlob; mineralogical theories of [index entry]
4Charles P. De Lasteyrie to Thomas Jefferson, 14 April 1816 (Jefferson Papers)
Werner, Abraham Gottlob; mineralogical theories of [index entry]