Calder Foundation
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Alexander Calder, Black Widow, 1948, Sheet metal, wire, and paint, 128" x 99", Instituto de Arquitetos do Brasil, Departmento de São Paulo, © Calder Foundation, New York/Artists Rights Society (ARS), New York 
Alexander Calder, Medusa, c. 1930, Wire, 12 1/4" x 17 1/4" x 9 1/2", Calder Foundation, New York, © 2016 Calder Foundation, New York / Artists Rights Society (ARS), New York
Alexander Calder, Acrobats, 1929, Wire and rod, 31 7/8" x 35 1/2" x 11 3/4", Calder Foundation, New York; Gift of Shawn Davidson, 2014, © 2016 Calder Foundation, New York / Artists Rights Society (ARS), New York
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