The Cheyenne Way, by Karl N. Llewellyn (HC, 1973, $3)
This is the "unique collaboration of a legal theorist and an anthropologist who, in this volume, provide a definitive picture of the law-ways of a primitive, nonliterate people. First published in 1941, The Cheyenne Way has been acclaimed universally as a foundational study of primitive law."
Sounds kind of different, doesn't it, although, as almost always, from the white perspective. Look for this in the Native American section.