The Sipper mss., 1973-2010, consists of the correspondence and business records of Ralph Bruno Sipper, 1932-, an antiquarian bookseller specializing in modern first editions.
The Skinner, Robert E. mss. II, 1983-2005, consists of drafts of detective novels and scholarly works on hard-boiled crime fiction by Robert E. Skinner (b. 1948).
The collection includes interviews, news broadcasts and lectures on puzzles as well as selections from various International Puzzle Party conference programs.
The Smith, Annette mss. 1964-2004, consists of the papers of Annette Smith, 1924-, Professor Emeritus of Literature at the California Institute of Technology.