Diaries, 1884-1885; correspondence, 1870-1908, including a letter concerning religion from Samuel L. Clemens (Mark Twain), 1 June 1885; manuscripts of Stoddard's work such as For the Pleasure of His Company, "St. Anthony, Wonder Worker of Padua," and "School Days at Notre Dame, 1885-1886"; and articles about Stoddard. Correspondents include Theodore F. Dwight, Daniel Hudson, CSC, William H. Rideing, and Richard Henry Savage.

Diaries also available on 3 reels of microfilm.