Gorgeous archival photos capture Calder’s transformation of sculpture with his invention of the mobile

With multiple essays by renowned scholars, artwork and installation images, and a suite of historic photographs of Alexander Calder’s (1898-1976) work taken by Marc Vaux in the 1930s, this catalog traces the breadth of Calder’s innovative practice, leading up to his conception of the mobile in 1931―an unprecedented form of kinetic sculpture that radically altered the trajectory of modern art.