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Alexander Calder, Eagle, 1971, painted steel, Olympic Sculpture Park, Seattle, WA
Alexander Calder's Balancing Act in Art and Life

Iconic American sculptor …

Alexander Calder metal mobile sculpture
The Calder Mobiles that Asked to be Touched
A custom sign planted in MoMA's sculpture garden in 1943 said "Please Touch," signaling to visitors at Alexander Calder's retrospective that it was okay to handle the kinetic sculptures and mobiles.