[1960s] Constant, De Nieuw Babylon Informatief No.4 plus poster, 1966 (1) Constant, De New Babylon Informatief No. 4. Edizione Internationale. Speziale per il padiglione Olandese al XXIIIa Biennale di Venezia, 1966. Tabloid, 52.5 x 34 cm, 8 pp. folded twice. Edited by Constant Nieuwenhuijs, R.W.D. Oxenaar and Jurriaan Schröfer. Published in conjunction with the exhibition of paintings, drawings, sculptures and New Babylon constructions by Constant Nieuwenhuys at the Venice Biennale. Includes a full-colour map of the artist's New Babylon Town. Texts predominantly in English, with some in French and Dutch. Copy with age-wear, mostly on exterior sheets, colour map in fine state. (2) Poster, for Constant's 1966 exhibition of drawings at Galerie Krikhaar in Amsterdam, which took place around the same time as the Venice Biennale. 52 x 34.5 cm, folded twice. Light rubbing spot along centre fold, else crisp. (total 2)