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

ASCO and Los Four opening reception at the Point Gallery in Los Angeles, 1975. ©1975, Harry Gamboa, Jr.

David Hockney, ca. 1974

Arthur Richer and Wallace Berman at Syndell Studio in Los Angeles, 1957. Richer’s art is in the background. The Getty Research Institute, Charles Brittin papers, 2005.M.11.16. © J. Paul Getty Trust. Image courtesy of Lauri Richer. Photo by Charles Brittin

Hard Edge group exhibition with works by Ronald Davis and Judy Chicago at Rolf Nelson Gallery in Los Angeles, May 1964. The Getty Research Institute, Gift of Rolf G. Nelson, 2010.M.38.2

Announcement for the exhibition Come and See at the Rolf Nelson Gallery in Los Angeles, June 14–July 23, 1965. The Getty Research Institute, Gift of Rolf G. Nelson, 2010.M.38.1

Billy Al Bengston polishing an artwork, 1963. © Billy Al Bengston. Image courtesy of Marvin Silver and Craig Krull Gallery, Santa Monica. © Marvin Silver

Poster for Vija Celmins exhibition at David Stuart Galleries in Los Angeles, February 28-March 26, 1966. © Vija Celmins. The Getty Research Institute, Gift of Michael Asher, 2009.M.30.13

Exhibition announcement for Action²: Works by West Coast Painters, at the NOW Gallery inside the Turnabout Theatre in Los Angeles, September 5–25, 1956. Robert Alexander, designer. Letterpress on paper mounted on cardboard. The Getty Research Institute, Charles Brittin papers, 2005.M.11.15. Courtesy of the Temple of Man, Inc.

Abstract Classicists meet at Lorser Feitelson’s studio in Los Angeles, May 10, 1959

Poster for Joe Goode exhibition at Dilexi Gallery in Los Angeles, 1963. The Getty Research Institute, Gift of Michael Asher, 2009.M.30.15. Image courtesy of Jerry McMillan and Craig Krull Gallery, Santa Monica. © Jerry McMillan

Billy Al Bengston’s studio at Clark Street and Santa Monica Boulevard, Los Angeles, 1957. Image courtesy of and © Billy Al Bengston

Sterling Holloway at his house, next to Larry Bell’s painting Little Blank Riding Hood (1961–62). Photo by Frank J. Thomas. Image courtesy of Larry Bell and the Frank J. Thomas Archives