FYI, ancestry.com has added the California Birth Index to collection: http://www.ancestry.com/search/db.aspx?dbid=5247 It's searchable by mother's maiden name, gender and county. If you didn't already know, vitalsearch-ca.com has free and paid options for their copy of the index. Of course, if you are just looking for those born in SF or San Mateo County, it's free at sfgenealogy.com. Ron