1Thomas Jefferson to Robert M. Patterson, 15 February 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
2John Vaughan to Thomas Jefferson, 22 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
3Thomas Jefferson to Thomas Cooper, 6 February 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
4Robert M. Patterson to Thomas Jefferson, 23 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
5Thomas Jefferson to John Wayles Eppes, 6 February 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
6Robert Walsh to Thomas Jefferson, 27 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
7William Short to Thomas Jefferson, 5 December 1821 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
8Peter S. Du Ponceau to Thomas Jefferson, 24 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
9Peter S. Du Ponceau to Thomas Jefferson, 22 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]
10Thomas Cooper to Thomas Jefferson, 23 January 1818 (Jefferson Papers)
Wistar, Caspar; death of [index entry]