Alexander Calder (/ˈkɔːldər/; July 22, 1898 – November 11, 1976) was an American sculptor known both for his innovative mobiles (kinetic sculptures powered by motors or air currents) that embrace chance in their aesthetic, his static "stabiles", and his monumental public sculptures. Calder preferred not to analyze his work, saying, "Theories may be all very well for the artist himself, but they shouldn't be broadcast to other people." Alexander "Sandy" Calder was born in 1898 in Lawnton, Pennsylvania. His birthdate remains a source of confusion. According to Calder's mother, Nanette (née Lederer), Calder was born on August 22, yet his birth certificate at Philadelphia City Hall, based on a hand-written ledger, stated July 22. When Calder's family learned of the birth certificate, they asserted with certainty that city officials had made a mistake. More information...
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