July 19 (Sunday) 1:00 PM (Free) Labor Archives and Research Center - SFSU 480 Winston Dr. SF. Presentation by Kim Munson. How did the arm and hammer end up on all those baking soda boxes? Art Historian Kim Munson shares her investigation of the origins of the arm & hammer from Greco-Roman myth and its role as an early union labor icon to its current usage as the Socialist Labor Party emblem and baking soda trademark. Hosted by the Labor Archives and Research Center. Contact: larc@sfsu.edu Phone: 415-564-4010