From the Sonnabend Collection:

Andy Warhol, Donald Judd, Robert Morris, Bernd und Hilla Becher, John McCracken, Bruce Nauman, Haim Steinbach, Mel Bochner, Rona Pondick, Jeff Koons, Ashley Bickerton, Clay Ketter and Matthew Weinstein

From the Daimler Art Collection:

Andy Warhol, Franz Erhard Walther, Haim Steinbach, Georg Herold, Silke Radenhausen, Eva-Maria Reiner, Andreas Reiter Raabe, Gail Hastings and Pietro Sanguineti