Howard F. Ahmanson, Sr., Anna Bing Arnold and Bart Lytton were the first principal patrons of the museum. Ahmanson made the lead donation of $2 million, convincing the museum board that sufficient funds could be raised to establish the new museum. In 1965 the museum moved to a new Wilshire Boulevard complex as an independent, art-focused institution, the largest new museum to be built in the United States after the National Gallery of Art.