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In page Ellen Ballon:

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In 1906, she moved to New York City, where she studied with Rafael Joseffy[2] and Rubin Goldmark. In March 1910, she gave her debut concert there, performing with the New York Symphony. She was invited to perform at the White House for President Taft; she would return to perform for President Roosevelt and President Eisenhower. She went to Switzerland in 1914, where she studied with Josef Hofmann. Because of World War I, she returned to New York in 1916. By this time, she was performing as a concert pianist.[citation needed]