Items in New York Heritage are organized into collections, which provide additional context for understanding their significance and meaning.

This collection consists of letters and marginalia of Samuel Clemens, artifacts associated with him and photos having to do with Clemens' time in Elmira and the family and friends that comprised his circle.
The Mason-Malone Collection consists of images from the Mason Studio archive of prints and negatives.
Historic postcards, genealogical records, and documents relating to mountain top communities in the Catskill region.