Connecting people to their diverse family heritage

The CGS Library will continue to follow Alameda County COVID protocols, open only by individual appointment. Click here to register for Library visits – you must register in advance!  Details — COVID_19 Mitigation page. We will not be reconvening any in-person committees or Special Interest Groups until further notice. Groups may meet online.  Although the CGS library is still closed for in-person classes and events, we have a full schedule of online lectures and series — see our Classes and Events.

Classes and Events

The California Genealogical Society (CGS) is more than just a research library. Come learn how to do genealogical research by taking classes. Learn about upcoming field trips, research trips, special events, and headline speakers.


NGS 2022 – See You in Sacramento

CGS is the local host for the conference. We look forward to seeing you there and sharing all the best the conference has to offer.


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Online Resources

Providing additional Online Resources on our website is a priority. These resources include lineage charts developed by our members, which provide finding aids and images. Search to find out if someone you are researching is included.


Special Interest Groups (SIG)

The society has special interest groups for members to link up with others doing similar research.


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Read Our Monthly eNews

Learn about upcoming genealogical events hosted by CGS and other organizations. Read about updates to our website, volunteer opportunities, and much more.


Visit Our Library

Visit our Library

The CGS Library has over 38,000 genealogical books, historic maps, a one-of-a kind manuscripts collection, and a bank of computers loaded with programs for doing research. Find an experienced volunteer to get help with your questions.


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