TJ's letters ARE at UVA in Alderman's Library "in the "stacks" - basement; BEEN THERE! TJ did SELL his books after War of 1812; the Brits burned DC... HE (TJ) needed $$$$$$$$$$, so he helped Prez James Madison out. TJ's papers are INTERESTING; HANDLE WITH CARE! Ppl from my "home-town" here (Lynchburg, Va.) helped him out... NOT Gold. Poplar Forest is about 5 miles west in Bedford County, Va. NICE place to walk, meditate...
Now; TJ was a Scientist, a Deist, NEVER a FreeMason; was GREATLY influenced by OLD French Rosicrucians (I was also 12th Degree R+C, in my younger days). NOTHING in "papers" about treasure-hunting (gold, etc); DID request Lewis & Clark to report back to him via ciphers, what they saw on their expedition. TJ personally dug into "Indians" Burial Mound (Monacan, I think), as a SCIENTIST doing an archeological excavation... "google" Thomas Jefferson Ciphers; he used the PATTERSON Cipher, too. "Google" Thomas Jefferson in Lynchburg, Va.