The Mission San Fernando was founded on September 8, 1797, as an outpost of New Spain, in the vast expanse between the San Gabriel and Santa Monica Mountains. Northwest over the Hollywood Hills from downtown Los Angeles, this land was developed into a vital farming and citrus breadbasket. After 1900, real estate developers began subdividing "the Valley," as it is popularly known, and by 1940, communities of Los Angeles proper and new cities formed...