Have you been watching NBC's Who Do You Think You Are? (Fridays at 8 p.m.)? Do you want to learn more about your own family tree? Hamden Public Library provides free access to Ancestry.com databases for patrons using computers within the library. (Remote access is not available at this time.) All you need is a valid library card that is in good standing to log on to library computers and find out more about your family's history.