Greenacre Reference Library & MAS Archives
Established in 1903, MAS's library is devoted to the city's complex ecology, its urban culture, history, design, and the natural and built environment.
About Greenacre Reference Library
- Books Catalog: librarything.com.
MAS’s Greenacre Reference Library contains more than 3,500 books and reports, nearly 3,000 MAS-produced archival documents, and approximately 13,000 digital files. Access is temporarily limited to documents and digital files.
Location: The Municipal Art Society of New York, 115 Broadway, Suite 1705, 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. The collections in 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 are housed at 401 East 110th Street, New York, NY.
Both locations are free to the public by appointment only and 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.