Untitled from the installation 'Biotoop' (1995) encaustic on board, unframed, 60,5x83 cm

Untitled from the installation 'Biotoop' (1995) encaustic and mixed media on three cigar boxes installed on a wooden lath, 17,5x61x3,5 cm

Untitled from the installation 'Biotoop' (1995) encaustic and mixed media on four cigar boxes installed on a wooden lath, 14x59x3,5 cm

Untitled from the installation 'Biotoop' (1995) encaustic and mixed media on four cigar boxes installed on a wooden lath, 13,5x90x3,5 cm

The deluxe edition of the catalogue for the Marcel Duchamp exhibition at Galerie Ronny Van de Velde, Antwerp, 1991. Consisting of a box, the top and bottom of which being reproductions of Duchamps 'mental’ Chess Board, with amongst others a portfolio of faithful reproductions of works by Duchamp; a book with articles on Duchamp by André Breton and Arturo Schwarz; an audio cassette of Duchamp speaking; and a single photograph of 'Marcel at the Age of Eighty-Five', with orig. slipcase, 38x37,5x6,5 cm.

Corneille/New York room 422 (1977) Published in 1977 by Cegna Editore, Macerata.

Untitled (Yayoi Kusama at Galerie Orez) all unframed, dimensions from 20x25 and 25x20 up to 30x40,5 cm

I. Robert Barry, 'Untitled', 1974; II. Ger van Elk, 'The Well Shaven Cactus', etc., 1971; III. Richard Long, 'From along a Riverbank', 1971; IV. Richard Long, 'From Around a Lake', 1973; V. Yutaka Matsuzawa, 'Catechism Art', 1973; VI. Lawrence Weiner, 'Van Tijd tot Tijd', 1971; VII. Lawrence Weiner, 'Having from Time to Time a Relation to:', 1973.

I. The Paintings (with us in the Nature) of Gilbert & George The Human Sculptors, Amsterdam Autumn 1971, Art For All, London 1971; II. A Day in the Life of George & Gilbert the sculptors Autumn 1971, Art For All, London 1971; III. George and Gilbert the living sculptors London. Catalogue for their 1973 Australian Visit, Art For All, London 1973.

I. Bas Jan Ader, William Leavitt, Ger van Elk. Pomona College Gallery, Montgomery Art Center, Pomona, ca. 1972; II. Daniel Buren, Es Malt, Konrad Fischer, Düsseldorf 1975; III. Stanley Brouwn, 100mm 879 mm, Art & Project, Amsterdam 1978; IV. Jan Dibbets, Roodborst Territorium, Sculptuur 1969, Seth Siegelaub. Verlag Gebr. König, Cologne/New York 1970; V. Sol LeWitt, The Location of Eight Points, Max Protetch Gallery, Washington 1974.

I. Richard Long, Skulptures, Städtisches Museum, Mönchengladbach 1970 (without the box); II. Richard Long, A Hundred Stones : One Mile Between First and Last, Richard Long, Cornwall England 1977, Kunsthalle Bern 1977; III. Richard Long, South America, Konrad Fischer, Düsseldorf 1972; IV. Hamish Fulton, 10 Views of Brockmans Mount, Stedelijk Museum, Amsterdam 1973.

I. Douglas Huebler, Durata Duration, 1970, 120 p. II. Joseph Kosuth, Function Funzione Funcion Fonction Funktion, 1970, 96 p. III. Robert Barry, Untitled, 1970, 118 p.

I. John Baldessari, Four Events and Reactions, Stedelijk Museum, Amsterdam 1975; II. Marcel Broodthaers, Museum, Der Adler von Oligozän bis heute, Städtische Kunsthalle, Düsseldorf, 1972 (two volumes); III. Salvo, Untitled, John Weber Gallery, New York, 1973; IV. Yves de Smet, Eight Works, Yang Poezie Reeks, Gent, 1972; V. Lawrence Weiner, Pertaining to a Structure, Robert Self Publication, London 1977; VI. Lawrence Weiner, Regarding Inscriptions (Of a Sort), Rolf Preisig & Moved Pictures (Lawrence Weiner), Basel, New York 1978.

Untitled woodcut on transparent paper, unframed, 25x37,5 cm

Untitled (2) pencil (and green ball-point) on paper (2), both unframed, each 21x29,5 cm

Reflectie woodcut in yellow on Japanese paper, numbered 17/190, 65x96 cm

Untitled woodcut in pale buff on Japanese paper, numbered 12/20, 63x92,5 cm

Untitled woodcut in green and black with pencil drawing, numbered 17/20, 63,5x73 cm

Untitled woodcut in pale buff on Japanese paper, numbered 12/20, unframed, 63x93 cm