New York Knowledge Base

Uncover articles, county guides, and other tools for tracing New York families.

New York Knowledge Base

Uncover articles, county guides, and other tools for tracing New York families.

Civil War men posed in front of the USSC

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Civil War Resource: United States Sanitary Commission Records

The records of the United States Sanitary Commission, recently reprocessed by The New York Public Library, are a vast and newly accessible resource for Civil War era family history research. The collection contains a wealth of materials useful for genealogical research.

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New York County Guides

Access detailed guides for each of New York's 62 counties. Our individual county guides feature overviews of key records (vital, census, etc.) as well as detailed listings of important county, local, and regional repositories. 

County Guides

Browse the Knowledge Base

The New York Knowledgebase includes hundreds of detailed articles and subject guides for anyone researching ancestors in New York. Start by selecting a topic or location, or browse the full knowledgebase.

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Explore the New York Researcher

An award-winning magazine, the New York Researcher features regular articles on collections, helpful research tips, and other updates. Members can access the latest issue online and past issues in the eLibrary.

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