VENICE.- Considered by many to be among the greatest gallerists of late 20th century contemporary art, Ileana Sonnabend (1914-2007) also brought together a major art collection of her own. The exhibition Ileana Sonnabend. An Italian Portrait, on view at the Peggy Guggenheim Collection, Venice, from May 29 to October 2, 2011, presents works from the Sonnabend Collection, New York, on the theme of Italy: works by Italian artists, and works by international artists which reference Italian culture, tradition, and topography.