The David Abrahamsen Research Files consist primarily of drafts and notes for Abrahamsen's studies on Jack the Ripper and Richard Nixon. Correspondence with David Berkowitz, the Son of Sam serial killer, is also held in the collection.

John Jay II was a graduate of Columbia college and an abolitionist. This collection includes letters, legal and financial documents, newspaper clippings, writings, photographs, circulars, and pamphlets.

Personal papers documenting aspects of local communal leader Morris Mesch. Materials include photographs, newspaper clippings, and other ephemera related to the community Holocaust Memorial Sculpture and volunteer activities and efforts.

Personal correspondence to Peter H. Hare from his wife Daphne Kean Hare, and to Peter or to Daphne Kean Hare from family and friends, beginning in their college years through the early 1990's. Also includes some professional materials and correspondence.