Bruce Nauman in his studio in Pasadena, California, ca. 1970. Photo by Frank J. Thomas. Courtesy of the Frank J. Thomas Archives

Ronald Davis's studio at Pico Boulevard and 4th Avenue in Los Angeles, 1966–72. Photo by Bob Jaye. Courtesy of Ronald Davis

Interior view of Ronald Davis's studio at Pico Boulevard and 4th Avenue in Los Angeles, 1966–72. Photo by Bob Jaye. Courtesy of Ronald Davis

View of Market Street in Venice, California, in 1970, showing the studio buildings of Larry Bell (right) and Robert Irwin (left). Photo by Larry Bell. Courtesy of and © Larry Bell

Joe Goode in his studio, ca. 1970. Image courtesy of Steven Steinman. © Steven Steinman

John Altoon in his studio, ca. 1968. Image courtesy of and © Joe Goode

Richard Diebenkorn painting in his triangle studio in Berkeley, California, 1962. Photo by Phyllis Diebenkorn. Courtesy of The Richard Diebenkorn Foundation

Richard Diebenkorn in front of his painting Cityscape in his Stanford University studio in Palo Alto, California, 1963. Photo by Leo Holub. Courtesy of The Richard Diebenkorn Foundation

Richard Diebenkorn in his studio at Main Street and Ashland Avenue in Santa Monica, ca. 1970–71. Photo by Richard Grant. Courtesy of the Richard Diebenkorn Foundation and Richard Grant

Robert Graham working on one of his boxes in the 1960s. Image courtesy of the Robert Graham Estate

Robert Graham working on one of his boxes in the 1960s. Image courtesy of the Robert Graham Estate

Ed Bereal in his studio in Los Angeles, ca. 1961. © Ed Bereal. The Getty Research Institute, Gift of George Herms, 2009.M.20.2. Image courtesy of Jerry McMillan and Craig Krull Gallery, Santa Monica. © Jerry McMillan

Frederick Eversley polishing one of his sculptures, 1970. Image courtesy of and © Frederick Eversley

Andrew Perchuk, Getty Research Institute, with John Mason inspecting Mason’s sculpture Orange Cross, 2010. © J. Paul Getty Trust

Larry Bell’s studio in 1970. Photo by Larry Bell. Image courtesy of Billy Al Bengston