The Times—joined by The Washington Post, which also was in possession of the documents—fought the order through the courts for the next 15 days, during which time publication of the series was suspended. On June 30, 1971, in what is regarded as one of the most significant prior-restraint cases in history, the U.S. Supreme Court in a 6–3 decision freed the newspapers to resume publishing the material. The court held that the government had failed to justify restraint of publication.
https://www.britannica.com/topic/Pentagon-Papers
Papers stolen by Dan Ellesberg, who was also the author.