BG Red, 1963, Ken Price. Fired clay with acrylic and lacquer on wooden base. 10 in. high. Collection of Mr. & Mrs. Gifford Phillips. Permission courtesy Ken Price Studio. Photo by Taylor Sherill

Big Jim McLain, 1967, Billy Al Bengston. Polyurethane and laquer on aluminum. 60 x 58 in. Collection of Joan and Jack Quinn. © Billy Al Bengston

Black Tear, 1969, Ronald Davis. Molded polyester resin and fiberglass. 60 ½ x 136 in. The Robert A. Rowan Collection, Pasadena, California. © Ronald Davis

Car Hood, 1964, Judy Chicago. Sprayed acrylic lacquer on Corvair car hood. 42 15/16 x 49 3/16 x 4 5/16 in. Moderna Museet, Stockholm. Acquired 2007 with means from The Second Museum of our Wishes. © Judy Chicago, 1964. Photo © Donald Woodman

Cloud Box, 1966, Peter Alexander. Cast polyester resin. 9 5/8 x 9 5/8 x 9 5/8 in. Collection of Janis Horn and Leonard Feldman, Los Angeles. © Peter Alexander. Photo: Brian Forrest

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

Gray Column, 1975–76, De Wain Valentine. Polyester resin. 140 x 87 1/2 x 9 1/2 in. Lent by De Wain Valentine. Artwork © De Wain Valentine

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

Larry Bell in his Market Street studio in Venice, California, 1961. Image courtesy of Larry Bell, Marvin Silver and Craig Krull Gallery, Santa Monica. © Marvin Silver

Larry Bell in his studio in Venice, California, 1969. Image courtesy of Malcolm Lubliner and Craig Krull Gallery, Santa Monica. © Malcolm Lubliner

Craig Kauffman, ca. 1955. © The Estate of Craig Kauffman. Photo by Ed Moses

Ed Moses painting on the floor of his studio, ca. 1955. Image courtesy of Ed Moses

Ed Moses working on a resin painting on the floor of his studio in the early 1970s. Image courtesy of Ed Moses

Helen Pashgian working in her studio in the 1970s. Photo by Walt Mancini. Courtesy of and © Helen Pashgian