On Kawara
In 2008, the Hirshhorn Museum and Sculpture Garden made an acquisition of thirty-nine works from the Panza collection including multiple pieces by Joseph Kosuth, Robert Irwin, Robert Barry, Hamish Fulton, and On Kawara, among others. That same year, the Albright-Knox Art Gallery acquired 71 artworks by 15 artists, partly as a gift from the Panza family and through funds from the museum's special endowment for art acquisitions.