Mason, Arthur (1876-1955) and Mary Frank (1888-1966) were children's book authors. The collection includes holograph manuscripts of novels and short stories, correspondence with agents and friends, contracts, reviews, diaries, and photographs that reflect their work as authors.
Herbert Spencer Zim (1909-1994) was a teacher and author in the field of science. His works in this collection reflect his work in the science field. Sonia Bleeker Zim was an editor for a publishing house and a writer of youth books. Her work in this collection represents her career as a youth author.