I don’t believe Indigenous people on the US call their practices witchcraft. You’ll be hard-pressed to find books about Indigenous spiritual traditions for a few reasons. First, most of their traditions are usually passed down orally within their families and tribes. Second, Indigenous practices are all going to depend on the Nation and People. If you’re looking to learn about those practices, my best advice would be to seek out people from those Nations and learn about their culture and practices from the Elders of that tribe if they’re willing to teach you.