The mural panels depicted various historical events from California's past, and was meant to span all of human history, from an early Native American creating art (#1, planned title: "In the Beginning, Waters Covered All Earth Except Mount Diabalo ") to the Golden Gate International Exposition (#26, planned title: "Chinatown—The Fair, 1946"). In between, other panels would include the California Gold Rush, the 1877 anti-Chinese Sand Lot riots, the 1860s building by Union Pacific of the western First Transcontinental Railroad, the disastrous 1906 San Francisco earthquake and fire, the trial of trade unionist Tom Mooney for the Preparedness Day Bombing, the 1934 San Francisco Waterfront Strike, the city's Second World War contributions, culminating in the 1945 signing of the United Nations Charter in the San Francisco War Memorial Opera House.