Constantin Brâncuși
Sweeney collected works by: Alexander Archipenko, Constantin Brâncuși, Alberto Burri, Alexander Calder, César, Alberto Giacometti, Lucio Fontana, David Hayes, Willem de Kooning, Fernand Léger, Joan Miró, Piet Mondrian, Pablo Picasso, Jackson Pollock and Pierre Soulages.