Greenacre Reference Library & MAS Archives
Established in 1903 and reinvigorated in 1978, MAS's library is devoted to the complex ecology of the whole of New York City. This collection covers all facets of the city’s urban culture, history, design, the natural and built environments, and the public realm.
About Greenacre Reference Library
- Books Catalog: librarything.com.
MAS’s Greenacre Reference Library contains thousands of books, reports, and MAS-produced archival documents, plus digital files.
Location: The Municipal Art Society of New York, 111 Broadway, Suite 1603, New York, NY
About MAS Archives
- Catalog: masarchives.omeka.net.
- To search, download the Finding Aid PDF for each Collection.
MAS Archives collections include primary source materials and other records of enduring value that document MAS’s activities on behalf of New York City since the organization’s founding in 1893. A variety of media formats cover MAS’s innovative, wide-ranging efforts in planning, preservation, public art, and public space.
The Greenacre Reference Library Collection within the Archives holds thousands of New York City-focused news “clippings” from the local, national, and international journalistic record. The MAS Archives collections are held at 401 East 110th Street, New York, NY.
Both locations are free to the public by appointment and will reopen in mid-January, 2026. Inquiries are welcome. Contact Erin Butler, ebutler@mas.org, 212-935-3960 x1274 (direct line 212-453-0065).
A selection of early records of MAS (1901-1960) is held at the Smithsonian Institution’s Archives of American Art, aaa.si.edu.
Become a member and get inspired!