Alexander Calder was one of the twentieth century's most prolific artists. Focusing on 267 signature works of art - selected from an oeuvre comprising some 16,000 objectsthis catalogue accompanies the first major American retrospective of his work in twenty years. This book is the catalogue of a major centenary exhibition that opens at the National Gallery of Art on 29 March 1998 and travels to the San Francisco Museum of Modern Art.