I think it is racist of this ‘Rat senator to ask them to provide written documentation. There is no way a slave was aware of anything being written down about them. They should demand to be able to utilize the “oral history” like the native Americans do when they want to make special claims they know they can’t back up.
When I was working on a project with the Nez Perce tribe these were referred to as “coyote stories”.
Elizabeth Warren reads your post and nods in silent approval. “Nez Perce? Oh, my goodness. That really takes me back to my childhood years!”