NILES' NATIONAL REGISTER, Baltimore, March 7, 1840  Page 3 has: "The Amistad" which is essentially a letter headed "The Amistad Africans" which begins: "We have no doubt the interference of the British government in the matter of the Amistad Africans was well enough intended, though we fear it will do more hurt than good..." with more.
This famous slave ship and the revolt of its occupants was not only a notable legal case at the time, but in 1997 was made into feature length movie by Stephen Spielberg.
Sixteen pages, 8 1/2 by 12 inches, very nice condition.

Background: This March 7, 1840 issue of Niles’ National Register highlights a critical nexus of international diplomacy and American domestic politics surrounding The Amistad, capturing the immediate fallout of British Foreign Secretary Lord Palmerston’s attempts to secure the freedom of the Mende captives. The notable letter, titled "The Amistad Africans," specifically critiques Great Britain's diplomatic intervention—invoked under its 1817 anti-slave-trade treaty with Spain—arguing that British meddling would "do more hurt than good" by alarming Southern pro-slavery interests and heightening American anxiety over foreign interference. Published just weeks after U.S. District Judge Andrew T. Judson had ruled that the captives were kidnapped illegally from Africa and ordered them returned to their homeland, the article reflects the intense public pushback and political friction that prompted President Martin Van Buren’s administration to appeal the decision, setting the stage for John Quincy Adams' landmark argument before the U.S. Supreme Court the following year.

As noted in Wikipedia, this title: "...(was) one of the most widely-circulated magazines in the United States...Devoted primarily to politics...considered an important source for the history of the period."