Alexander Calder was an American sculptor and artist most famous for inventing mobile sculptures. In addition to mobile and stable sculpture, Alexander Calder also created paintings, lithographs, toys, tapestry, jewelry and household objects. Alexander "Sandy" Calder was born in Lawnton, Pennsylvania, on July 22, 1898. His father, Alexander Stirling Calder, was a well-known sculptor who created many public installations, a majority of them in Philadelphia. Calder’s grandfather, sculptor Alexander Milne Calder, was born in Scotland and immigrated to Philadelphia in 1868. He is best... known for the colossal statue of William Penn on top of Philadelphia's City Hall tower. Calder’s mother, Nanette Lederer Calder, was a professional portrait painter who studied at the Académie Julian and the Sorbonne in Paris from around 1888 until 1893. She then moved to Philadelphia where she met Alexander Stirling Calder while studying at the Pennsylvania Academy of the Fine Arts. Calder’s parents were married on February 22,1895. His sister, Margaret "Peggy" Calder, was born in 1896.
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