I know of a good book "Prehistoric Warfare in the Southwest" but I can't recollect the name of the author. (Sorry, but that's the best I can do.)
Thanks for the lead. At Amazon.com (purveyors of homosexual kiddie porn) I find:
Prehistoric Warfare in the American Southwest
by Steven A. Leblanc.
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Prehistoric Warfare
in the American Southwest
by Steven A. Leblanc