Contains correspondence, manuscripts, transcripts, and other documents pertaining to U.S. Catholic Church History. Boxes 12 and 13, which deal with notable individuals in U.S. Catholic History, are arranged alphabetically by last name of individual. Boxes 14 through 20 contain documents which focus on the history of Catholicism in particular geographic places in America, and they are arranged alphabetically by geographic area.
Contains manuscripts related to the Supreme Court. Includes Knox's typed manuscript 'Experiences as Law Clerk to Mr. Justice James C. McReynolds' and printed proofs of Supreme Court decisions with handwritten comments by justices.