- All the things I know but of which I am not at the moment thinking – 1:36 PM; June 15, 1969 New York.
- Robert Barry, 1969
- printed matter
- Ask
- All the things I know but of which I am not at the moment thinking – 1:36 PM; June 15, 1969 New York.
- Robert Barry, 1969
- printed matter
- Ask
contexts：
- Paul Maenz Jahresbericht 1971
- Paul Maenz
- Paul Maenz, Koln, 1971 ⁄ softcover
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- Prospect 71 Projection
- Konrad Fischer / Jürgen Harten / Hans Strelow
- Art-Press Verlag, 1971 ⁄ soft cover
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- Salon nr.6, Januar 1979
- Gerhard Theewen
- Salon Verlag, 1979 ⁄ softcover
- Ask
- Salon nr.3, Oktober 1977
- Gerhard Theewen
- Salon Verlag, 1977 ⁄ softcover
- Ask