100 Boots, 1971–73, Eleanor Antin. Halftone reproductions on 51 cards. 4 ½ x 7 in. each. The Getty Research Institute, 2011.M.23, 2006.M.24, 890164, and 2009.M.5 (Gift of Hal Glicksman). © Eleanor Antin. Courtesy Ronald Feldman Fine Arts, New York

24 Pieces, 1970, Allen Ruppersberg. Spiral-bound offset lithograph. Self-published book. 6 1/4 x 8 1/4 in. The Getty Research Institute, 89-B22093.c1. © Allen Ruppersberg

Shoot performance at F-Space Gallery in Santa Ana, California, 1971, Chris Burden. Gelatin silver print documenting the event by Alfred Lutjeans. 9 15/16 x 7 15/16 in. The Getty Research Institute, Gift of Art in the Public Interest and 18th Street Arts Center, 2006.M.8.41. © Chris Burden

A Gourmet Experience, 1974, Martha Rosler. Gelatin silver print. 10 1/16 x 7 15/16 in. The Getty Research Institute, Long Beach Museum of Art Video Archive, 2006.M.7.26 © Martha Rosler

Al's Grand Hotel catalog, 1971, Allen Ruppersberg. Offset lithograph. 9 x 6 x 1/16 in. The Getty Research Institute, 94-B15837. © Allen Ruppersberg

Constructing a Saw Horse, 1972, William Wegman. Gelatin silver print. 13 1/2 x 10 3/4 in. © William Wegman

Entr’Acte Happening at CalArts, 1972, Allan Kaprow. Courtesy Allan Kaprow Estate

Event performance at University of California, Santa Barbara, 1970, Wolfgang Stoerchle. Gelatin silver print documenting the event, unknown photographer. 9 15/16 x 8 in. The Getty Research Institute, 2009.M.16.1. © J. Paul Getty Trust

Every Building on the Sunset Strip, 1966, Ed Ruscha. Self-published book, offset lithograph, 1966 (second printing 1971). 7 1/8 x 5 3/4 x 3/8 in. Open unfolded: 7 1/8 x 297 in. The Getty Research Institute, 86-B19486.c1. © Ed Ruscha

Full Jar, Empty Jar performance at Art Gallery, University of California, San Diego, 1974, Barbara T. Smith. © Barbara T. Smith

Gonna California, 1969, recorded by Terry Allen. Vinyl record (45rpm). 6 7/8 in. diameter. The Getty Research Institute, Allan Kaprow Papers, 980063.180. © Terry Allen, Green Shoes Publishing, BMI, Administered by BUG Music

Greetings from L.A.: A Novel, 1972, Allen Ruppersberg. Offset lithograph. Self-published book. 8 x 5 1/4 x 11/16 in. The Getty Research Institute, 90-B12310.c1. © Allen Ruppersberg

Barbara T. Smith’s artist business card, 1970s. © Barbara T. Smith. The Getty Research Institute, Gift of Hal Glicksman, 2009.M.5.10

Poster for John Baldessari exhibition Pure Beauty at Molly Barnes Gallery in Los Angeles, 1968. © John Baldessari. The Getty Research Institute, 890164.87

Ed Ruscha in his studio at 1024 3/4 N. Western Avenue in Hollywood, California, 1970. Image courtesy of Billy Al Bengston. Photo © Larry Bell