Allan McCollum assembles a group of his Constructed Paintings in his studio at Brooks Avenue and Speedway in Venice, California, 1972. Image courtesy of and © Allan McCollum

Ed Moses and Frank Gehry in Greece, 1975. Image courtesy of Ed Moses and Frank Gehry

Craig Kauffman in Billy Al Bengston's studio in the 1960s. Image courtesy of and © Billy Al Bengston

An exhibition at Billy Al Bengston’s Artist Studio, with works by Ed Ruscha, Peter Alexander, and John McCracken, 1970. Image courtesy of Billy Al Bengston

Norman Zammitt working in his studio in Pasadena, California, 1976. Image courtesy of and © Norman Zammitt Estate

Norman Zammitt's painting materials in his studio in Pasadena, California, 1978. Image courtesy of and © Norman Zammitt Estate

John Baldessari in 1960. Image courtesy of John Baldessari

John Baldessari in the late 1960s. Image courtesy of John Baldessari

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

Lee Mullican in 1959. Image courtesy of Marc Selwyn Fine Art, Los Angeles. © Estate of Lee Mullican

Sam Francis in his studio on West Channel Road in Santa Monica, California, 1968. Photo by Frank J. Thomas. Image courtesy of the Sam Francis Foundation, California

Helen Lundeberg in front of one of her paintings. Photo by Frank J. Thomas. Courtesy of the Frank J. Thomas Archives

Larry Bell, Billy Al Bengston, and Ken Price outside Hotel Caesars in Tijuana, Mexico, 1968. Image courtesy of Larry Bell

Allan McCollum with one of his Constructed Paintings in his studio on Brooks Avenue in Venice, California, ca. 1971. Photo by Frank J. Thomas. Courtesy of the Frank J. Thomas Archives