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V.H., 1967 -
Sculpture for Stereo Viewers, 1968
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Erosion Machine No. 4, 1969
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Virtuoso Timer, 1969
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Specimen Viewer No. 1, 1970
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Emergency Nature Supply Kit (E.N. Supply, No. 271-OJ), 1971
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Art Medicine Kit, 1972
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Supply & Demand, 1972
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Art Tool Paint Experiments, Paint Dipper in Display Box, 1972
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Alternative TV #4, 1974
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Erosion Series 2, 1975
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Natural Museum of Modern Art, 1979
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Liquid/Solid Series: Solid - liquid No. C2, 1980
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Twin Rock Communication Indicator, 1983
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Anthropocene Landscape 2, 2006
