The Society’s Research Library collection includes over 10,000 books, manuscripts and pamphlets, newspapers, almost 600 atlases and maps (1849–present, also on microfilm) and over 275,000 ephemeral items documenting communities, demographics, history, architecture, business and industry, individuals, and more, both past and present. The collection also includes more than 525 audiotapes, and 556 videotapes of lectures, walking tours and museum exhibitions.

Library Rules of Use
BCHS rules for using the library can be read online or downloaded as a pdf HERE.

Ready Reference Service
The Ready Reference Service is a valuable feature of the Research Library, offering information by telephone, mail, and email to researchers. Library staff provides answers to questions about New York and lower Westchester County history, statistics, or current topics.

Media Collection
The Research Library is the repository for over 1,000 pieces of documentary materials in film, audio, video, CD, and DVD formats that record Bronx life since the 1930s. The Media Collection is available for both on-site Library viewing and duplication for private, non-profit, and commercial programming.

Microfilm & Microfiche Collection
On-site researchers heavily utilize this collection of almost 400 items. The collection contains New York City Directories from 1850, the political scrapbooks of former Bronx Borough President James J. Lyons, the full run of the borough newspaper, The Bronx Home News (1908-1948), and the map and atlas collection, stored also in microfilm format for preservation and accessibility.

Map & Atlas Collection
The collection consists of 450 loose sheet maps and 145 atlases listed in the collection database. These materials date from the 1860s to the present.