Here is the order in Wyoming v. Herrera:
The case is on remand from the Supreme Court (decision here).
Here are the materials in Big Horn County Elec. Coop. v. Big Man (D. Mont.):
Prior post here.
Coverage of the Herrera v. Wyoming argument, here.
“Can Congress Void a Tribal Treaty Without Telling Anyone?” here.
From SCOTUSBlog, here.