sentences:  In 1941, MoMA hosted the ground-breaking exhibition, "Indian Art of the United States" (curated by Frederic Huntington Douglas and Rene d'Harnoncourt), that changed the way Native American arts were viewed by the public and exhibited in art museums.When Abby Rockefeller's son Nelson was selected by the board of trustees to become its president, in 1939, at the age of 30; he was a flamboyant leader and became the prime instigator and funding source of MOMA's publicity, acquisitions, and subsequent expansion into new headquarters on 53rd Street.His brother, David Rockefeller, also joined the museum's board of trustees, in 1948, and took over the presidency, when Nelson was elected Governor of New York, in 1958.