Here are the materials in Lafley v. Adams (D. Mont.):
Here are the new materials in Big Horn County Elec. Coop. v. Big Man (D. Mont.):
Prior post with additional briefing here.
Here is the complaint in Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation v. Dept. of the Interior (D. Mont.):
Here is the complaint in Sxʷnq̓ʔels l Suw̓ečm / Ksukⱡiⱡmumaⱡ ʾA·kጦaⱡmukwaʾits d/b/a Energy Keepers Inc. v. Hyperblock LLC (D. Mont.):
Lower court materials here.
Here are the materials in Wilhite v. Littlelight (D. Mont.):
Post in related case here.