This is a primary source photo collection on Californios, elite families that received large land grants from Spain and Mexico, flourished during the 1830s to 1880s. The hand-drawn diseño maps underscore their vital connection to land ownership. The more formal surveyed maps that followed US acquisition of California show changing values regarding land ownership. As Californios lost land and power in the late 19th century, they tried to adapt to these changes by using social networks to maintain their identities as elites. The formal portraits were one way to bolster this image. Photographs of the Ramona Pageant from the 1950s testify to the mythologizing of California's Mexican and Spanish pastoral heritage less than 100 years later.

Starting with the Gold Rush, Chinese migrated to California and other regions of the United States in search of work. As several photographs show, many Chinese found work in the gold mines and on the railroads. They accepted $32.50 a month to work on the Union Pacific in Wyoming in 1870 for the same job that paid white workers $52 a month. This led to deep resentment by the whites, who felt the Chinese were competing unfairly for jobs. White labor unions blamed the Chinese for lower wages and lack of jobs, and anti-Chinese feelings grew. The cartoon "You Know How It Is Yourself" expresses this sentiment. Several political cartoons in this topic are graphic representations of racism and conflicts between whites and Chinese. "Won't They Remain Here in Spite of the New Constitution?" shows a demonized figure of political corruption protecting Chinese cheap labor, dirty politicians, capital, and financiers. "The Tables Turned" shows Denis Kearney (head of the Workingman's Party of California, a union that had criticized Chinese laborers) in jail, being taunted by Chinese men. In 1880, President Rutherford B. Hayes signed the Chinese Exclusion Treaty, which placed strict limitations on the number of Chinese allowed to enter the United States and the number allowed to become naturalized citizens. In 1882, Congress passed the Chinese Exclusion Act, which prohibited immigration from China (The Act was not repealed until 1943). The two-part cartoon from the July-December 1882 issue of The Wasp reflects how some citizens saw the situation. After the Act was passed, anti-Chinese violence increased. One illustration depicts the Rock Springs Massacre of 1885, a Wyoming race riot in which 28 Chinese were killed by British and Swedish miners. The "Certificate of Residence" document illustrates that Chinese individuals were required to prove their residence in the United States prior to the passage of the Exclusion Act. The poster offering a reward for Wong Yuk, a Chinese man, makes it clear that the United States was actively deporting Chinese. Despite discrimination and prejudice, this first wave of immigrants established thriving communities. Photographs taken in San Francisco's Chinatown show prosperous businesses, such as the "Chinese Butcher and Grocery Shop." Wealthy merchants formed active business associations, represented by the image "Officers of the Chinese Six Companies." The Chinese celebrated their heritage by holding cultural festivals, as shown in the photograph from 1896. The photographs "Children of High Class," "Golden Gate Park," and "Chinese Passengers on Ferry" are evidence that some Chinese adopted Western-style clothing while others wore more traditional attire.

In 1931, a severe drought hit the Southern and Midwestern plains. As crops died and winds picked up, dust storms began. As the "Dust Bowl" photograph shows, crops literally blew away in "black blizzards" as years of poor farming practices and over-cultivation combined with the lack of rain. By 1934, 75% of the United States was severely affected by this terrible drought.The one-two punch of economic depression and bad weather put many farmers out of business. In the early 1930s, thousands of Dust Bowl refugees ? mainly from Oklahoma, Texas, Colorado, Kansas, and New Mexico ? packed up their families and migrated west, hoping to find work. Entire families migrated together (such as the men shown in "Three generations of Texans now Drought Refugees") in search of a better life. Images such as "Midcontinent ? Family Standing on the Road with Car," "Drought Refugees," and "Untitled, ca. 1935 (Worn-Down Family in Front of Tent)" offer a glimpse into their experience on the road, and show that cars provided many families both transportation and shelter on the road. About 200,000 of the migrants headed for California. The state needed to figure out how to absorb the thousands of destitute people crossing its borders daily. One of their tactics was to document the plight of the refugees. In 1935, photographer Dorothea Lange joined the Rural Rehabilitation Division of the California State Emergency Relief Administration (SERA), a section of the Federal Emergency Relief Administration. She was assigned the job of using her camera to document the growing number of homeless Dust Bowl refugees migrating to California. She worked with Paul S. Taylor, a professor at the University of California, Berkeley, who was researching conditions of rural poverty in order to make recommendations on how to improve the workers' conditions. The work by Taylor and Lange played an important role in helping to raise public awareness of the crisis. The reports they made for the government included both data and striking images that revealed the desperate conditions in which the migrants lived and confirmed the need for government intervention. Stark images such as "Home of Oklahoma Drought Refugees" resonated with the public, and portraits of drought refugees like "Ruby from Arkansas" and others shown in this topic humanized the migrants for more fortunate citizens. In March 1936, Lange took what became one of her most famous images, "Migrant Mother." This image of a 32-year-old woman became an icon for the suffering of ordinary people during Great Depression.

Classroom posters with engineering and historical facts about the Bridge available for download.

The Mendez family won the landmark federal court case that challenged segregation in California schools. In 1947 California was the first state to officially end segregation in public schools. Today it is the most segregated state for Latinos.