In order to understand the history of the EPs Thomas Jefferson sold to his brother-in-law, John Bolling, I needed to find out more about them while they were with Jefferson. I was able to achieve this via discovering a digitized copy of Jefferson's Farm Book: a ledger where he noted all manner of things about the EPs held by him. It is genuinely a genealogical goldmine in terms of Jefferson EP family research.
This episode is also available as a blog post: https://genealogyadventures.net/2018/09/24/piecing-together-enslaved-family-relations-at-monticello/
