Robert O. Anderson, a philanthropist who used his success in the business world to support an array of major cultural organizations, died Sunday at his home in Roswell, N.M., at age 90, the Los Angeles Times reports.

Mr. Anderson, who chaired the Atlantic and Richfield oil companies (Arco) for two decades and helped start a building boom with the construction of the Arco Plaza in downtown Los Angeles in 1972, guided his company to play a vital civic and philanthropic role in the city. The company donated $3-million to help build the Los Angeles County Museum of Art, which opened in 1986. As a lifetime trustee of the museum, Mr. Anderson worked with other local business leaders to support the growth of the arts in the city.

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