Born in an explosive boom and built through distinct economic networks, San Francisco has a cosmopolitan character that often masks the challenges migrants faced to create community in the city by the bay. Latin American migrants have been part of the city's story since its beginning. Charting the development of a hybrid Latino identity forged through struggle--latinidad--from the Gold Rush through the civil rights era, Tomas F. Summers Sandoval Jr. chronicles the rise of San Francisco's diverse community of Latin American migrants. This latinidad, Summers Sandoval shows, was formed and made visible on college campuses and in churches, neighborhoods, movements for change, youth groups, protests, the Spanish-language press, and business districts. Using diverse archival sources, Summers Sandoval gives readers a panoramic perspective on the transformation of a multinational, multigenerational population into a visible, cohesive, and diverse community that today is a major force for social and political activism and cultural production in California and beyond.