The largest example is the Wanamaker Organ, installed in 1911 after having been exhibited at the St. Louis World's Fair.
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Whether by geographical influence or artistic choice, he gravitated toward the French Romantic Organ school of the 19th century that had its origins in the new symphonic organs of Aristide Cavaillé-Coll.
He played a major role in the development of the French symphonic organ style and was closely associated with the organ builder Aristide Cavaillé-Coll, inaugurating many new Cavaillé-Coll organs.