Two galleries, one atop the other, have combined forces to present this 50-artist tribute to legendary New York dealer and collector Holly Solomon (1934-2002). For over 30 years, the onetime “Pop princess” (Warhol, Lichtenstein, Rauschenberg and many others made portraits of her) exercised an eclectic taste that ranged from the Pattern and Decoration movement to Joseph Kosuth, from Gordon Matta-Clark to Mary Heilmann, from Douglas Huebler to Nam June Paik.