David E. Wilkins 
Red Prophet [PDF ebook] 
The Punishing Intellectualism of Vine Deloria, Jr.

In the face of looming, tumultuous global change, this examination provides answers for those venturing into Vine’s work in Indigenous and non-Indigenous politics, ecology, and organization. David E. Wilkins’s insights, based on his personal relationship with Deloria, document the sacred life and legacy of "one of the most important religious thinkers of the 20th century, according to TIME.