Correspondence, diaries, writings, photographs, scrapbooks, research materials, and miscellanea documenting the personal life and literary career of Katherine Mayo, an author of several historical and investigative articles, essays, and books from 1896 to 1940. Prior to Mayo’s success as a literary figure she was employed by Oswald Garrison Villard to conduct extensive field research for his biography of John Brown. The collection includes a piece of the rope allegedly used to hang Brown.