- S.M.S (Shit Must Stop) | No 6
- The Letter Edged in Black Press, New York, 1968
- cardboard portfolio
- edition 2000
- Ask
- S.M.S (Shit Must Stop) | No 6
- The Letter Edged in Black Press, New York, 1968
- cardboard portfolio
- edition 2000
- Ask
Richard Artschwager, Ed Bereal, Diter Rot, Betty Dodson, Ronoldo Ferri, John Giorno, Toby Mussman, Adrian Nutbeem, Claes Oldenburg, Mischa Petrov, Jean Reavey, Bernar Venet
contexts：
- 29 No News
- Jürgen O. Olbrich, Udo Idelberger
- No Edition, Kassel, 1994 ⁄ printed plastic bag with: a stack of green index cards, glued, held together by black metal clip ⁄ edition 80
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- Record as artwork: 1959-73
- Germano Celant, Roselee Goldberg
- Royal College of Art, 1973 ⁄ softcover
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- Concrete Poetry : An Exhibition in Four Parts
- Alvin Balkind
- The Fine Arts Gallery, University of British Columbia, Vancouver, 1969 ⁄ 3 color folders with folding posters + 25 loose sheets in 3 panel cardboard folder
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- Schwarze Quadrate / Black Squares. Vorgelegt von presented by Dietrich Helms.
- Dietrich Helms
- Edition Copie, Hannover, 1979 ⁄ softcover with white belly band ⁄ edition 391
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