The lawsuit, which seeks possession of the papers, was filed Wednesday against Howard Nelson Ballou in U.S. District Court in Jackson. It says Ballou's mother worked for King as a secretary from 1955 to 1960 and kept documents during the time King led the Montgomery Improvement Association and the Southern Christian Leadership Conference.
King's estate is a Georgia corporation and is operated as a private company by his children. They've fought others for control of the King brand, including suing media companies that used his "I Have a Dream" speech.
