Here are the briefs: Littlefield Brief Mashpee Tribe Federal Brief Reply Oral argument audio here.
Here are the materials in In re Subpoena of Kenney (D. Mass.): 3 Motion to Quash Subpoena 13 Response 18 Reply 39 Magistrate Order
Here are the materials in Duggan v. Martorello (D. Mass.): 118 Second Amended Complaint.pdfDownload 125 Martorello Motion to Dismiss.pdfDownload 136 Duggan Opposition to Martorello Motion.pdfDownload