Asian Influences I, Kurt Lidtke Galleries, Seattle
Hue, Schmidt Bingham Galleries, New York
Collection 1, The National Museum of Art, Osaka, Japan
Patrick Heron: Garden Paintings, incl.Tobey, Monet, Bonnard, Picasso etc, Tate St. Ives, Great Britain
2001/02
Da Kandinsky a Pollock. La vertigine della non-forma, Museo Cantonale d'Arte Lugano, Switzerland
2002
Klänge des Inneren Auges - Mark Tobey, Morris Graves, John Cage, Kunsthalle Bremen, Germany 
Sounds of the Inner Eye - Mark Tobey, Morris Graves, John Cage, The Museum of Glass, International Center for Contemporary Art, Tacoma
Mark Tobey and Sam Francis - Drawings and Monoprints, Bobbie Greenfield Gallery, Santa Monica
Durch 150 Jahre in Schwarz/Weiss, Hachmeister Galerie, Münster, Germany
Moderne und Stammeskunst, Galerie Berndt, Cologne, Germany
2003
Abstract works on paper, autour de Mark Tobey, Galerie Darthea Speyer, Paris, France
Northwest Mythologies - The Interactions of Mark Tobey, Morris Graves, Kenneth Callahan and Guy Anderson, Tacoma Art Museum
Two Friends - Lyonel Feininger, Mark Tobey, Achim Moeller Fine Art, New York
Unaussprechlich schön - Das mystische Paradies in der Kunst des 20. Jahrhunderts, Kunsthalle Erfurt, Germany
La collection Jean Planque, Salle St. Jean, Hotel de Ville, Paris, France
2003/04
The Edge of Tomorrow - Tobey, Price and Graves from the 1940’s, Museum of Art, University of Oregon; San José Museum of Art
El Expresionismo Abstracto Americano en las Colecciones Españolas, Museo de Arte Contemporáneo Esteban Vicente, Segovia, Spain
2004
An American Odyssey, 1950-1980 - Debating Modernism, Circulo de Bellas Artes, Madrid; Centro de Arte de Salamanca; Kiosco Alfonso, La Coruna, Spain