Single Form Single Form Single Form (BH 325) is a monumental bronze sculpture by the British artist Barbara Hepworth. It is her largest work, and one of her most prominent public commissions, displayed since 1964 in a circular water feature that forms a traffic island at the Headquarters of the United Nations in New York City, outside the United Nations Secretariat Building and the Dag Hammarskjöld Library. It is also the largest artwork cast by the Morris Singer foundry. Copies of a smaller version, Single Form (Memorial) (BH 314), are on public display outside the Johns Hopkins University's Paul H. Nitze School
The Persistence of Memory with the variation "The Disintegration of the Persistence of Memory" (1954), showing his earlier famous work systematically fragmenting into smaller component elements, and a series of rectangular blocks which reveal further imagery through the gaps between them, implying something beneath the surface of the original work; this work is now in the Salvador Dalí Museum in St. Petersburg, Florida, while the original "Persistence of Memory" remains at the Museum of Modern Art in New York City. Dalí also produced various lithographs and sculptures on the theme of soft watches late in his career. Some of these sculptures are the "Persistence