1Thomas Jefferson to John Melish, 10 December 1814 (Jefferson Papers)
deafness; and old age [index entry]
2Charles Thomson to Thomas Jefferson, 16 May 1816 (Jefferson Papers)
deafness; and old age [index entry]
3Charles Thomson to Thomas Jefferson, [by 7 January 1817] (Jefferson Papers)
deafness; and old age [index entry]