New Solicitor’s Opinion Reaffirming MHA Nation’s Ownership of Missouri River Minerals

Here:

m-37073-status-of-min-ownership-underlying-mo-river-w.in-boundaries-of-ft-berthold-res-nd-2.4.22

Nishu Medicine Hall [Library of Congress]
Plat Map of Fort Berthold Reservation c. 1893
Attachment 2 to the opinion

Interior Withdraws Solicitor’s Office M Opinion on the Meaning of IRA’s “Under Federal Jurisdiction” Language

Here is M-37055 (pdf), withdrawing M-37029.