2201 Broadway, Suite LL2, Oakland CA
Tel. (510) 663-1358 FAX (510) 663-1596


Open Thursday-Saturday, 10 a.m. to 4 p.m. and by appointment.

  • Non-members are welcome for a $5 use fee.
  • The first Saturday of each month is free.
  • Library has 6 computers, a laser printer, and a copier/scanner for patron use.
  • Free WiFi! Bring along your laptop or tablet!

Books and periodicals - Whether you have ancestors from the South, Mid-Atlantic, New England, Midwest, the West or California, you will find books, periodicals and resources to support your genealogy research. We also have holdings on Canada, the United Kingdom and other countries.

City directories – CGS has a variety of city directories with an emphasis on directories of the San Francisco Bay Area.

Internet access and subscription websites– Bring your laptop or use one of our computers. CGS has library subscriptions to the following, accessible from any computer on our network, including WiFi:

  • Library Edition
  • Fold3
  • HistoryGeo

Our computers also have handy links to:

  • California Genealogy
  • Digital Public Library of America
  • Family History Archives
  • FamilySearch
  • Historic American Newspapers
  • Information Wanted
  • Library of Congress Catalog
  • Rootsweb
  • S.F. Genealogy


CGS Library

Manuscript collection – Discover our unique manuscript collection which contains pedigree charts, letters and information that is available only at our library.

Vertical File - Dive into the treasure trove in our Vertical File collection of families and places. Search our on-line index which includes a synopsis of each file, providing information to help you determine if coming to the Library to examine the file would be beneficial to your research.

Microfilm/Microfiche holdings include records from Australia, Canada, England, France, Ireland, and many U.S. states. Search the catalog and after filling in your search terms and clicking "search" select "microform" in the "Formats" checkbox on the "results" page.

Index to large pedigree charts - View our surname index to large genealogical charts in the library.