1Franz X. Zeltner to Thomas Jefferson, 29 October 1817 (Jefferson Papers)
immigration; from Switzerland [index entry]
2Franz X. Zeltner to Thomas Jefferson, 14 April 1819 (Jefferson Papers)
immigration; from Switzerland [index entry]
3Christopher Winckelblech to Thomas Jefferson, 25 May 1819 (Jefferson Papers)
immigration; from Switzerland [index entry]