Artists outside the Ferus Gallery in Los Angeles, 1959. Clockwise from top: Billy Al Bengston, Irving Blum, Ed Moses, and John Altoon. Photo by William Claxton. Courtesy Demont Photo Management, LLC.

Irving Blum with Andy Warhol's Campbell's Soup Cans at the Ferus Gallery in Los Angeles, 1962. Photo by William Claxton. Courtesy Demont Photo Management, LLC.

Poster for Karl Benjamin exhibition at the Esther-Robles Gallery in Los Angeles, 1964. © Karl Benjamin. The Getty Research Institute, Gift of Michael Asher, 2009.M.30.12

Announcement for Frederick Eversley exhibition Colored Parabolic Space at the Quay Gallery in San Francisco, 1971. © Frederick Eversley. The Getty Research Institute, Gift of George Herms, 2009.M.20

Protest on La Cienega Boulevard, outside the Ferus Gallery, May 15, 1965. The Getty Research Institute, Charles Brittin papers, 2005.M.11. © J. Paul Getty Trust. Photo by Charles Brittin

Cover of Womanspace journal, vol. 1, no. 1, 1973. The Getty Research Institute, Gift of Hal Glicksman, 2009.M.5.20. Courtesy of Judy Chicago

Ed Moses with his installation at Mizuno Gallery, 1970. Image courtesy of and © Billy Al Bengston

Interior view of Barbara Byrnes's American Contemporary Gallery in Hollywood in the late 1940s. Image courtesy of James Byrnes

John Baldessari (left) at the opening of his exhibition at the Molly Barnes Gallery in Los Angeles, 1968. Photo by Phillip T. Jones and courtesy of John Baldessari. © Phillip T. Jones

John Baldessari at the opening of his exhibition at the Molly Barnes Gallery in Los Angeles, 1968. Photo by Phillip T. Jones and courtesy of John Baldessari. © Phillip T. Jones

Exterior view of the Ferus Gallery during the exhibition of Edward Kienholz's installation Roxy's, 1962. Photo by William Claxton. Courtesy Demont Photo Management, LLC.

Felix Landau in his gallery on La Cienega Boulevard in Los Angeles. Photo by Frank J. Thomas. Courtesy of the Frank J. Thomas Archives

Nicholas Wilder, ca. 1969–70. Photo by Frank J. Thomas. Courtesy of the Frank J. Thomas Archives

Poster for The Studs group exhibition at the Ferus Gallery in Los Angeles, 1964. Image courtesy of Hal Glicksman

Exterior view of Nicholas Wilder Gallery at the time of Ronald Davis's first solo exhibition in 1965. Image courtesy of Ronald Davis