A friend sent me the following link - it is from 2007 but has a great list. Some are Navajo, but a lot of coverage on treatment of American Indians.
Silenced Voices
This area of our exhibit highlights Native American authors/artists and themes of American Indian literature, sovereignty, constitutional history, decolonization, and representation. Despite the significant contributions of Indians in contemporary culture and politics, American Indian expression continues to be suppressed, both overtly and covertly.
Most of the books on display are available for check-out. Click on the title to go to the library catalog online, then click the "Request" link near the top of the page.