1John Adams to Thomas Jefferson, 9 August 1816 (Jefferson Papers)
salt; alleged mountain of [index entry]
2“Johannes Vonderpuff” to Thomas Jefferson, 1 October 1814 (Jefferson Papers)
salt; alleged mountain of [index entry]
3Francis Adrian Van der Kemp to Thomas Jefferson, 12 March 1821 (Jefferson Papers)
salt; alleged mountain of [index entry]