1820 Settlers Monument, Grahamstown; Standard Bank Centre Gallery, Johannesburg; Namibian Arts Association, Windhoek; Irma Stern Museum, Cape Town; Tatham Art Gallery, Pietermaritzbur; Durban Art Gallery, Durban; King George VI Art Gallery, Port Elizabeth; William Humphreys Art Gallery, Kimberly; Oliewenhuis Art Museum, Bloemfontein; Pretoria Art Museum, Pretoria
Field, Richard S.; Yale University Art Gallery, New Haven; La société des expositions du Palais des beaux-arts, Brussels; Städtische galerie im Lenbachhaus, München; Boice, Bruce; Bois, Yve-Alain; Krauss, Rosalind E; Leen, Frederik; Meyer, James; Newman, Sasha M; Pincus-Witten, Robert; Prinz, Jessica; Wilmes, Ulrich; Wilson, William S
Museo de arte moderno de Bogota; Museo de arte contemporaneo Sofia Imber de Caracas; Museo universitario Del Chopo de México; Museo nacional de la estampa, Mexico; Beuys, Joseph; Blanco, Alberto; Channing, William Ellery; Clemente, Francesco; Farias, Maria Emilia; Gravel, Claire; Hanh, Tchich Nhat; Lague, Mario; Winfield, David J.S.
San Francisco Museum of Art, San Francisco; Denver Art Museum, Denver; Krannert Art Museum, University of Illinois, Urbana; Joslyn Art Museum, Omaha; The Columbus Gallery of fine Arts, Columbus; The Museum of Modern Art, New York; Baltimore Museum of Art, Baltimore; Milwaukee Art Center, Milwaukee; Lieberman, William S.