Alexander Calder, internationally famous by his mid-30s, is renowned for developing a new idiom in modern art - the mobile. His works in this mode, from miniature to monumental, are called mobiles (suspended moving sculptures), standing mobiles (anchored moving sculptures) and stabiles (stationary constructions). Calder's abstract works are characteristically direct, spare, buoyant, colorful and finely crafted. He made ingenious, frequently witty, use of natural and manmade materials, including wire, sheet metal, wood and bronze. Calder was prolific and worked throughout his career in many art forms. He produced drawings, oil paintings, watercolors, etchings, gouache and serigraphy. He also designed jewellery, tapestry, theatre settings and architectural interiors. In a century that saw the forms of art and literature reinvented regularly, Alexander Calder stands out as one of the great pioneers of his time.