> I'm rather sure that the natives knew then, and know today, of past crimes within their populations. Many such crimes were recorded in oral histories. Sounds

> I'm rather sure that the natives knew then, and know today, of past crimes within their populations. Many such crimes were recorded in oral histories. Sounds like a fun weekend project, go interview tribal historians for the tribes of that region for crimes that predate the first-"known" crime from TFA and submit it such that the author can publish a retraction.