Library Overview


H. Furlong Baldwin Library


In response to COVID-19 and statewide closures, and with the health and safety of our visitors and staff in mind, the Maryland Historical Society, including the H. Furlong Baldwin Library, are currently closed. Please continue to check back for updates.  

While our Library is closed, you can still reach our staff by email at [email protected]. Questions relating to physical collections will be answered after we reopen.  

In the meantime, we encourage you to:

Browse our Online Collections
Explore the Maryland Historical Magazine online
Visit our underbelly blog
Contribute to our Collecting in Quarantine initiative

Please check back for further updates.

User Information

Library Catalog

Research Resources

Programs & Services

Donations & Support

Collection OverviewCollections OnlineRights & Reproductions

Featured Collections


Library Hours:  Wednesday-Saturday, 10 a.m. to 5 p.m.

Special Collections Hours: By appointment only. Click here to schedule an appointment.

For inquiries contact: 410-685-3750 ext. 359 or email or [email protected].


The Maryland Historical Society’s H. Furlong Baldwin Library enables researchers, students, teachers, and others to have access to the records of Maryland’s past while preserving irreplaceable historical materials for future generations. 

The sizeable collection of books, journals, manuscripts, newspapers, maps, prints, obsolete currency, oral histories, ephemera, and microfilm which the library makes available to the public via the Reference Department and Special Collections is one of the nation’s most extensive and important historical resources.

Among the more than 7 million items at the H. Furlong Baldwin Library are Francis Scott Key’s original manuscript of "The Star-Spangled Banner," papers of Maryland’s colonial governors and signers of the Declaration of Independence, including the Carroll Papers, the Lloyd Papers, Tilghman Family Papers, over 900,000 photographs, and considerable genealogical resources.

MdHS strives to make its collections even more accessible through the Collections Online database.  

Before planning your visit, please view the Library User Information. View the Collections Overview page to read about the Library's collections. For an in-depth tutorial on searching the library collections, please read our Field Guide to Searching the Maryland Historical Society Library Collections.

Library collections on MdHS social media sites: 

MdHS Library blog, "Underbelly"

MdHS Photographs Tumblr