Recently, the Library of Congress introduced the Indigenous Law Portal as a gathering place for legal documents pertaining to the indigenous people of the Americans. Today, they are working on the US states, but they will be adding Canadian First Nations information next.
To try the new portal and to search for documents by state, for example, click on this link, then click on the state you are interested in.
Here’s what is offered, so far, for Maine. Enjoy!
Houlton Band of Maliseet Indians
Métis Nation of New England
Passamaquoddy Tribe (Indian Township)
Passamaquoddy Tribe (Pleasant Point)
Previously Penobscot Tribe of Maine
Aroostook Band of Micmacs