May 5 Exploration in 1602 Sebastián Vizcaíno, explorer for the Spanish king, sailed from Acapulco to explore the California coast. He sought safe harbors for Spanish ships returning from the Philippines.  Labor in 1907  Streetcar workers in the Carmen’s Union, demanding a $3 per day for an 8-hour day, went on strike in San Francisco. Patrick Calhoun, […]