Orange Cross, 1963, John Mason. Ceramic with glaze. 64 x 49 x 16 in. Collection of Vernita Mason. © John Mason. Photo by Roxanne Hall Morganti

Pam Beale, 1971, Allan McCollum. Dyed and bleached canvas with caulk. 103 x 103 in. Mildred Lane Kemper Art Museum, Washington University in St. Louis, Gift of Anne V. Champ, 1974. © Allan McCollum

Papa's Got a Brand New Bag, 1964, Wallace Berman. Mixed media collage. 44 1/2 x 32 ¼ x 2 in. Collection of David Yorkin & Alix Madigan, Los Angeles. Permission courtesy of the Estate of Wallace Berman and Michael Kohn Gallery, Los Angeles

Poster for the exhibition New Painting of Common Objects at the Pasadena Art Museum, 1962. Wood-type letterpress on paper. 42 3/8 x 28 in. Image courtesy of the Ed Ruscha Studio

Plaster and Roofing, Lakewood, California, 1950, William A. Garnett. Gelatin silver print. 7 11/16 x 9 9/16 in. © Estate of William A. Garnett

Quality Material, 1966–68, John Baldessari. Acrylic on canvas. 67 3/4 x 56 1/2 in. Collection of Danielle and David Ganek. © John Baldessari

Real Estate Opportunities, 1970, Ed Ruscha. Self-published book, offset lithograph. 7 1/16 x 5 5/8 x 3/16 in. Open to pages depicting 12th & Sentous (southeast corner), and 1140 E. Pico. The Getty Research Institute, 86-B19480. © Ed Ruscha

Red Concave Circle, 1970, De Wain Valentine. Cast polyester resin. 96 x 96 x 12 in. Bank of America Collection. © De Wain Valentine. Photo: Harry Drinkwater

Announcement for George Herms exhibition Nativity '63 at Rolf Nelson gallery in Los Angeles, 1963. © George Herms. The Getty Research Institute, Gift of Michael Asher, 2009.M.30.9

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

Semina cover with altered press photograph of William George Heirens (the “Lipstick Killer”), 1963, Dean Stockwell. Semina journal, no. 8 (1963) by Wallace Berman. Halftone reproduction on cardstock, mounted on cardboard. 7 1/16 x 5 1/2. The Getty Research Institute, 2864-801.no8.6. Courtesy of Dean Stockwell and the Estate of Wallace Berman and Michael Kohn Gallery, Los Angeles

Semina cover with photograph of Cameron, 1955, Wallace Berman. Semina journal, no. 1 (1955) by Wallace Berman. Gelatin silver print mounted on cardstock. 7 1/2 x 4 in. The Getty Research Institute, 2564-801.no1.2. Courtesy of the Estate of Wallace Berman and Michael Kohn Gallery, Los Angeles

Semina cover with Wife (photograph of Shirley Berman), 1959, Wallace Berman. Semina journal, no. 4 (1959) by Wallace Berman. Halftone reproduction on cardstock. 9 7/16 x 8 x 1/16 in. The Getty Research Institute, 2564-801.no1.2. Courtesy of the Estate of Wallace Berman and Michael Kohn Gallery, Los Angeles

Some Los Angeles Apartments, 1965, Ed Ruscha. Self-published book, offset lithograph, 1965 (seconding printing 1970). 7 1/16 x 5 9/16 x 1/4 in. The Getty Research Institute, 86-B19485.c2. © Ed Ruscha

Sonday, 1964, Melvin Edwards. Welded steel. 12 1/2 x 7 x 7 1/2 in. Collection of and © Melvin Edwards. Photo by Kristopher McKay