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

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

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

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

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

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

Wallace Berman with a copy of Semina no. 1 in the Stone Brothers Printing display window, 1957. The Getty Research Institute, Charles Brittin papers, 2005.M.11.17. © J. Paul Getty Trust. Photo by Charles Brittin

Dean Stockwell and Wallace Berman at Stone Brothers Printing, 1957. The Getty Research Institute, Charles Brittin papers, 2005.M.11.18. © J. Paul Getty Trust. Photo by Charles Brittin

Letter and brochure for Al's Grand Hotel, May 2, 1971, designed by Allen Ruppersberg. Offset lithograph brochure, typed letter (signed). © Allen Ruppersberg. The Getty Research Institute, Gift of Michael Asher, 2009.M.30.2

Heavy Industry Publications advertising books by Ed Ruscha, ca. 1968. Offset lithograph. © Ed Ruscha. The Getty Research Institute, Gift of Michael Asher, 2009.M.30.1

Orb, a Chouinard Art Institute student journal, vol. 1, no. 2, 1959. © Ed Ruscha. The Getty Research Institute, 2925-311, v1.no2

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

Ed Ruscha holding his book Every Building on the Sunset Strip, 1967. © Ed Ruscha. Image courtesy of Jerry McMillan and Craig Krull Gallery, Santa Monica. © Jerry McMillan

L.A. Odyssey, 1969, Diane di Prima (poet), cover design by George Herms. Poets Press, San Francisco, 1969. Offset lithograph. 8 5/8 x 5 9/16 x 1/16 in. Book © Diane di Prima. The Getty Research Institute, Gift of George Herms, 2009.M.20.27. Cover image © George Herms