- Robert Barry: 30 pieces as of 14 June 1971
- Gerd de Vries, 1971
- soft cover
- edition 1000
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- Robert Barry: 30 pieces as of 14 June 1971
- Gerd de Vries, 1971
- soft cover
- edition 1000
- Ask
Something which is very near in place and time, but not yet known to me
contexts：
- Art As Idea As Idea 1967-1968
- Joseph Kosuth
- Paul Maenz, Brussels, 1973 ⁄ softcover
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- TriQuarterly 32. Anti-Object Art.
- Charles Newman
- Triquarterly, New Jersey,1975 ⁄ cardboard cover with the pocket with the five photos ⁄ - ⁄ Vito Acconci, Hans Haacke, Joseph Beuys, Christo, Agnes Denes, Ira Joel Haber, Lawrence Weiner, Marjorie Strider, Douglas Huebler, Gregg Powell, Brenda Miller, John Baldessari, Gilbert & George, LeAnnn Bartok Wilchusky, Richard Serra, Will Insley, Phil Berkman, Michael Crane, Michael Kirby, Spephen Zaima, Eleanor Antin, Jan Sullivan, Nancy Holt, Adrian Piper, Robert Barry, Richard Long, Sol LeWitt, Robert Smithson, Joseph Kosuth, Alice Aycock, A. Ribé, Daniel Buren, Rafael Ferrer, Scott Burton, and Les Levine
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- Paul Maenz Jahresbericht 1971
- Paul Maenz
- Paul Maenz, Koeln, 1971 ⁄ softcover ⁄ David Askevold, Robert Barry, Mark Boyle, Hans-Peter Feldmann, Hans Haacke, Giulio Paolini, Peter Roehr, Ulrich Rückriem, Salvo, Marthe Wéry
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- May – 12 Postkarten
- Hans-Peter Feldmann, Paul Maenz
- Hans-Peter Feldmann, 1974 ⁄ postcard
- Ask