New York Public Library Digital Gallery
- Provides access to over 275,000 images digitized from the library collections, including illuminated manuscripts, historical maps, vintage posters, rare prints and photographs, illustrated books, and printed ephemera.
- http://digitalgallery.nypl.org/

Ask a Question
- Web form at the New York Public Library, library card required.
- http://ask.nypl.org/ask.asp

New York Public Library System
- The New York Public Library consists of four major research libraries and 85 branch libraries located in three boroughs of New York.
- http://www.nypl.org/