Here is the unpublished opinion in Stephen C. v. Bureau of Indian Education:
Here is the opinion in Grand Canyon Trust v. Provencio.
Here are the materials in United States v. Ortega (D. Ariz.):
News coverage of the acquittal here.
Here is the complaint in Chickasaw Nation v. Caremark CVS (E.D. Okla.):
Most of the other pleadings are sealed.
Here are the materials in Caremark LLC v. Chickasaw Nation (D. Ariz.):
1 Petition to Compel Arbitration
13 Motion to Compel Arbitration
28 DCt Order
And here are the briefs so far in Caremark LLC v. Chickasaw Nation (9th Cir.):
Here are the briefs in Grand Canyon Trust v. Provencio:
Federal Answer Brief
Lower court materials here.
Here is the complaint in Navajo Nation v. Office of Navajo and Hopi Indian Relocation (D. Ariz.):
Here is the complaint in a related suit, Navajo Nation v. United States (Fed. Cl.):