I wasn't sure what category this question should be in. Are you aware of and could share any studies on the actual acres ceded (or abrogated) from the Tribes to the US? I've seen several video examples of Charles Royce's maps digitized and stitched to show overall land loss and remaining reservation lands. And I've seen a website with acreage calculators that might work if I could draw the cede boundaries. I would greatly appreciate any leads or advice. rschliesman