1Thomas Jefferson to Caspar Wistar, 17 August 1813 (Jefferson Papers)
I recieved your favor of June 29. by mr Correa , it’s bearer. I found him what you had described...
2Thomas Jefferson to Caspar Wistar, 19 September 1813 (Jefferson Papers)
The inclosed letter from mr Brackenridge on the subject of the mounds & remains of fortifications...