Unsettled by Colin Woodard. A 29-part series chronicling 50 years of triumph and tragedy among the Passamaquoddy people by the Portland Press Herald. You can read the prologue for free, but I highly recommend you download (for $4.00) the digital version of the entire series and read it. I learned a great deal from this series. https://www.pressherald.com/unsettled/
Restitution by Paul Brodeur
Passamaquoddy People: At Home on the Ocean and Lakes. A powerful cultural portal created by Donald Soctomah and others in the Passamaquoddy nation.