1Thomas Cooper to Thomas Jefferson, 23 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
2Thomas Cooper to Thomas Jefferson, 19 April 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
3Peter S. Du Ponceau to Thomas Jefferson, 24 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
4Peter S. Du Ponceau to Thomas Jefferson, 22 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
5Francis W. Gilmer to Thomas Jefferson, 18 March 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
6William S. Jacobs to Thomas Jefferson, 3 July 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
7Thomas Jefferson to Robert M. Patterson, 15 February 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
8Thomas Jefferson to Thomas Cooper, 6 February 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
9Thomas Jefferson to John Wayles Eppes, 6 February 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
10Robert M. Patterson to Thomas Jefferson, 23 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]