Flanders, 1961–62, Llyn Foulkes. Mixed media. 54 x 36 x 14 in. and 16 x 15 3/4 in. Collection of Ernest & Eunice White. © Llyn Foulkes. Photo © Douglas M. Parker Studio

For People Who Know The Difference, 1967, John McCracken. Polyester resin, fiberglass, and plywood. 120 x 20 1/4 x 3 1/4 in. Collection of the Mohn Family Trust. © The Estate of John McCracken. Courtesy David Zwirner, New York

Freeway, 1966, Vija Celmins. Oil on canvas. 17 1/2 x 26 3/8 in. Collection of Harold Cook, Ph.D. © Vija Celmins. Image courtesy McKee Gallery, New York

Green and Cream, 1966, Ken Price. Glazed ceramic. 4 x 8 1/2 x 3 1/2 in. Private collection. Permission courtesy Ken Price Studio. Photo by Zoe Zimmerman

Hegemann Wedge, 1971, Ed Moses. Powdered pigment, acrylic, and resin on canvas. 96 x 82 in. Collection of Phyllis & John Kleinberg. Image courtesy of and © Ed Moses

Homage to Hermann Hesse, 1949 (modified 1954), Wallace Berman. Wood. 59 x 21 3/16 x 17 7/8 in. Collection of Joy Stockwell. Permission courtesy of the Estate of Wallace Berman and Michael Kohn Gallery, Los Angeles

Inside and Out, 1964, Melvin Edwards. Welded steel. 12 x 8 3/4 x 5 3/4 in. Collection of Susan and David Lawrence. © Melvin Edwards

Little Big Horn, 1959, Peter Voulkos. Polychromed stoneware. 62 x 40 x 40 in. The Oakland Museum of California, gift of the Art Guild in memory of Helen Schilling Stelzner. © Mrs. Ann Voulkos, Voulkos Family Trust. Image courtesy of the Voulkos & Co. Catalogue Project. Photo by Joe Schopplein

Magical Space Forms, 1948, Lorser Feitelson. Oil on board. 30 x 39 ¾ in. Collection of Bunty and Tom Armstrong, New York. © Feitelson Arts Foundation, courtesy Louis Stern Fine Arts. © Photography by Gerard Vuilleumier

Norman Zammitt executing his painting North Wall, 1976. Acrylic on canvas. 96 x 168 in. Collection of Leon Gazarian & Monique Powell. © Norman Zammitt Estate

Ocean Park No. 26, 1970, Richard Diebenkorn. Oil on canvas. 89 x 81 in. Nerman Family Collection. © The Estate of Richard Diebenkorn, Catalogue Raisonné #2415

Ocean Park No. 67, 1973, Richard Diebenkorn. Oil on canvas. 100 x 81 in. The Doris and Donald Fisher Collection. © The Estate of Richard Diebenkorn, Catalogue Raisonné #1482

Ocean Park Series, 1962, John Altoon. Oil on canvas. 72 x 84 in. Orange County Museum of Art, Newport Beach, CA: Museum purchase with additional funds provided by Dr. James B. Pick and Dr. Rosalyn M. Laudati, Mr. Ward Chamberlin, Mrs. E.G. Chamberlin, Patricia Fredericks, Mr. and Mrs. Carl Neisser, Mr. and Mrs. John Martin Shea, Mr. and Mrs. Samuel Goldstein, Zada Taylor, Mr. David H. Steinmetz, and Mrs. Bernard McDonald. Permission courtesy of the Estate of John Altoon and Braunstein/Quay Gallery, San Francisco, CA. Photo by Gene Ogami

Orange Cross, 1963, John Mason. Ceramic with glaze. 64 x 49 x 16 in. Collection of Vernita Mason. © John Mason. Photo by Roxanne Hall Morganti

Pam Beale, 1971, Allan McCollum. Dyed and bleached canvas with caulk. 103 x 103 in. Mildred Lane Kemper Art Museum, Washington University in St. Louis, Gift of Anne V. Champ, 1974. © Allan McCollum