1964 8 Circles Series Violet Green
1970 Tomato Piece (front)
1970 Floating Onions (back)
1971 Proposal For Battery Park
1972 Chess Documentation Number 10 - Expl. 83/95
1972 Sky Writing - Expl. 57/90
1972 Restricted Growth - Expl. 26/50
1973 Better than the Real Thing
1973 Lost, Borrowed or Stolen
1973 Continental Divide - Expl. 52/100
1974 Stripes on Spots and Spots ob Stripes - Expl. 15/50
1975 Beach Zebra - Expl. 50/50
1975 Stories And Natural Histories - Portfolio - Exp. 73/75
1975 Iceberg Project (1968) - Expl. 73/75
1975 Grand Canyon Project (1969) - Expl. 73/75
1975 Threaded Calabash (1969) - Expl. 73/75
1975 Lime-Grass Piece (1969) - Expl. 73/75
1975 Apple Triangle (1970) - Expl. 73/75
1975 Paricutin Project (1970) - Expl. 73/75
1975 Two Chrysanthenum Pieces (1970/71) - Expl. 73/75
1975 Foraging (1971) - Expl. 73/75
1975 Electric Chruches (1973) - Expl. 73/75
1975 The Paradox of the Twins II (1974) - Expl. 73/75
1996 Rose Bridge - Expl. A/P 2/10
1980 Roman Empire Series No VI
1980th Hannibal Crossing the Alps (study)
1969/89 Long Point Project
1989 Fish Landscape - Expl. A/P 8/11
1989 Underwater Soapwort Line II - Expl. A/P 3/11
1990 Venice Sea Snakes - working proof
1990 Whale Ballet - Expl. h. de. C.
1992 The Writers´ Forest - Expl. A.P.
1994 The Collector´s Story
1995 Ozone Eater - Expl. 24/30
1996 Thrown Rope Projet for Artists´ Garden at Weimar - Working Proof
1998 Autumn Mountain - Expl. 3/30
1999 International Boogie-Woogie II