Visit the Library

The Library is open by appointment only from Wednesdays – Fridays, 10 am – 4:30 pm. Email us at to schedule a visit.

If you have a reference question that does not require an onsite visit, contact us at, and a librarian will answer your email in 2-4 weeks.


New-York Historical’s Patricia D. Klingenstein Library is one of the oldest, most distinguished research libraries in the United States and a vital center of research into the history of New York and the nation. Among its extensive collections are millions of books, newspapers, maps, manuscript and archival collections, prints, photographs, and architectural collections, dating from the 16th century to the present. These holdings, many of them unique, reveal the complexity of history and inspire engagement, discovery, and original scholarship.

Collection strengths include exploration and voyages; the Colonial, Revolutionary, and Early Republic eras; the mercantile history of New York and the expanding nation; American military and naval history; the Anglo-American Slave trade and the lived experience of the enslaved people of the United States; the Civil War, religion and religious movements; New York City social services and charitable organizations; and New York City architecture and the built environment.

Before You Visit

Online Catalog

The majority of the Library's collections have been processed and catalogued, and may be found by searching the online catalog.

Visit Online Catalog


Sign up for the Library's collections request system

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Requesting Materials

Instructions for how to request Library materials

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Collecting at the Library

Interested in making a gift? Here's what you need to know

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  • All researchers must check in on the first floor before proceeding to the reading room on the second floor.
  • Masks must be worn at all times in the reading room and social distance maintained.
  • Research is by appointment only and limited to those who have identified collections specific to the Patricia D. Klingenstein Library.
  • Because appointments are in high demand, we recommend emailing us at as far in advance as possible. 
  • All researchers must abide by the Library’s security and handling guidelines.

Your care and support help us to maintain our collections for future generations. Thank you for your cooperation.

Reproductions and Photocopying

The Library encourages researchers to use hand held cameras to capture images of Library collections for later reference. All photography must be done in accordance with the Library's photography guidelines. Photocopies made by the Library as well as photographs taken by researchers are intended for reference purposes only and may not be reproduced or sold in any form. Those desiring photographic reproductions of Library materials or permission to reproduce such images should contact the Department of Rights & Reproductions directly.