Timeline of the San Francisco Bay Area Gate across the bay<br> Atherton is incorporated in San Mateo County<br> California Memorial Stadium "(pictured, right)" opens in Berkeley, as the home field for the California Golden Bears football team of the University of California, Berkeley<br> The East Bay Municipal Utility District is formed to provide water and sewage treatment services to the East Bay<br> The San Francisco Opera Ballet gives its first performance, of "La bohème" "(pictured, left)", with Queena Mario and Giovanni Martinelli, conducted by founder Gaetano Merola, at the San Francisco Civic Auditorium 1924 1925 The heated, saltwater Fleishhacker Pool in San Francisco opens "(pictured, left)"<br> The
San Francisco in the 1970s San Francisco continued to contribute significantly to San Francisco in the 1970s. The black population of San Francisco peaked in the early 1970s; in 1972 one in seven citizens was black. Many African-American residents still lived in the Fillmore district, which had given birth to a thriving jazz scene and been called the Harlem of the West in the 50s and 60s. However, urban redevelopment began to push blacks out of the Fillmore in the late 1960s; by 1980 San Francisco's black population had decreased by 10%. Some Japanese-Americans had returned to the Fillmore after their internment during World War