Chester Female Institute, Armonk

Photograph by Gray Williams

The Library

The Westchester County Historical Society has the most comprehensive collection of local history and genealogy in the county, and it is housed in a state-of-the art temperature- and humidity-controlled environment. Interesting and important stories await you in our collection of well over 150,000 books, pamphlets, periodicals, newspapers, manuscripts, maps and atlases, and pictures. Located in the Westchester County Archives and Records Center, our private collection perfectly complements the historically significant public records held in the County Archives.

All processed items in the Society's collections, as well as those in the County Archives, are available to the public for research free of charge when you visit our reading room. Copies of most items are available at a nominal charge. The reading room is open every Tuesday and Wednesday from 9 am to 4 pm with professional staff and trained volunteers to assist you. If you are unable to visit us in person, please read about our research services.