Good news, bad news:
The good news is that ACPL replied lightning-quick, and they even included a scan of p. 310 of Choctaw Heritage. (Give me a few minutes to put it all in a PDF and upload it.) As a reminder, all claims of Lettice Cole being Choctaw trace back to this book, which was self-published in 1981.
The bad news is that the genealogical library reference staff at ACPL state this: "The only citations on page 310 are for the military service of William Hickman. There is not any citations on the origins of Lettice Cole. The back of the book has citations but nothing for after page 108. I have attached page 310 so you can see it yourself. I would highly recommend not using this book as a source based on the lack of citations throughout."
They also state this: "There is a chapter devoted to Tabitha Hickman (1852-1920), daughter of Samuel Fraser Hickman and Lucy Fille. It does not state how she is connected to William Hickman and Letes Cole. The book is not arranged as a genealogy but rather as a chapter by chapter history. Samuel Fraser Hickman (1815-ca. 1885) and wife Lucy are mentioned in an earlier chapter in connection with the Fille Ma Chubbee Cemetery in Sugarloaf County, Choctaw Nation. It lists the graves in that cemetery, which includes a grave for William A. Hickman (1805-1883), but no mention of Letes/Lettice (etc.)."
So this means a few things:
- There's a story of Lettice Cole being Choctaw, but we can find no record of that story existing prior to 1981.
- The earliest mention we have of Lettice Cole being Choctaw has no supporting evidence.
- The main source we're using for the Hickman is inherently flawed due to lack of citations, and we should not be using it or anything else that relies on it.
This doesn't automatically mean that Lettice couldn't have been Choctaw, but it means we have no proof of it as of now. If we want to preserve her and her line as Choctaw in the Geni tree, we need to find something better.
We also have a bunch of questions we need to ask about Samuel Frazier/Choctaw By Marriage and Paris Frazier and what's been going on with their profiles. I've started a new thread for focusing on that here.