http://www.manraytrust.com/
Legendary Photography, painter, and maker of objects and films, Man Ray was one of the most versatile and inventive artists of this century. Born in Philadelphia in 1890, he knew the worlds of Greenwich Village in the avant garde era following the 1913 Armory show; Paris in the 1920's and 1930's, where he played a key role in the Dada and Surrealist movements; The Hollywood of the 1940s, where he joined others chased by war from their homes in Europe; and finally, Paris again until his death in 1976.

http://www.calder.org/
Alexander Calder (1898-1976), whose illustrious career spanned much of the 20th century, is the most acclaimed and influential sculptor of our time. Born in a family of celebrated, though more classically trained artists, Calder utilized his innovative genius to profoundly change the course of modern art. He began by developing a new method of sculpting: by bending and twisting wire, he essentially "drew" three-dimensional figures in space. He is renowned for the invention of the mobile, whose suspended, abstract elements move and balance in changing harmony. Calder also devoted himself to making outdoor sculpture on a grand scale from bolted sheet steel. Today, these stately titans grace public plazas in cities throughout the world.