Comprises a wide variety of ephemera documenting the natural, social, political, economic, and cultural life of California
-- and particularly San Francisco -- in the nineteenth and twentieth centuries. Collection materials are organized into hundreds
of subjects, representing different places (cities, neighborhoods, streets, buildings, and geographic features); events (natural
disasters, migrations, holidays, and wars); commercial enterprises (businesses, trades, and industries); and political, educational,
and cultural organizations and activities (schools, churches, political parties, labor unions, and clubs). Particularly well
documented are diverse and specific industries, businesses, technologies, schools, churches, and clubs that flourished in
San Francisco and throughout the state during and after the Gold Rush.