There's an article at Comic Book Resources that's sort of a roundtable discussion of Native Americans in comics, and it includes quotes from Tim Truman, Mark Waid, David Mack, Jeff Mariotte and me, among others.
And then there's SCALPED. Guéra is busy finishing issue #7, and it's already looking like the best issue yet. I'll need to get to work on #8 pretty soon. First though, I need to dig up reference on knife fights, cow bells, big ass belt buckles, bull riding, various styles of Kung Fu and Merle Haggard's tour bus. And I'll also probably re-watch both RETURN OF THE DRAGON and EMPEROR OF THE NORTH POLE.