The Banks Family Papers collection consists of personal and legal papers of Robert Lenox Banks and his family, primarily his daughter, Mary Decamp Banks Moore. These include correspondence to and from the Banks Family by local businessmen, politicians, such as New York Governor, John T. Hoffman, and William Vanderbilt, President of the Hudson River Railroad. The documents are mostly personal in nature, describing the private life of a prominent local family of the 19th Century. Also in this collection are photographs, genealogical information, and other items relating to the Banks, Lenox, and Corning families.

The Pruyn Family Papers contains documents relating to three consecutive generations of the John Pruyn Family, along with genealogies and personal papers of more distant family relations. An autograph collection of presidents, statesmen, and local historic figures is included. The ownership of 43-45 North Pearl Street is documented from the first sale in 1679 to the last in 1968. The estates of Eleanor Erving, Justine Bayard Erving and Van Rensselaer Pruyn are also documented.

The Ten Eyck/Bronk Family Papers contain the records of the descendants of Jacob C. Ten Eyck (1705-1793), and primarily contain documents relating to family property and financial concerns.