Originally written in German Der Weg zum unitären Urbanismus (The Path to Unitary Urbanism) is the only known text by Constant that establishes a link to the Situationist International. Constant was associated with this movement from 1958 to 1960.

Description de la zone jaune (Description of the Yellow Zone) in Internationale Situationniste, nº 4, June 1960, p. 23-26. Republished in Internationale Situationniste 1958-1969, Amsterdam, van Gennep, 1970 and in Internationale Situationniste 1958-69, Paris, Éditions Champ Libre, 1975.

Première proclamation de la section Hollandaise de I.S. (First proclamation of the Dutch Section of the SI) in Internationale Situationniste, nº 3, December 1959, p. 29-31. Republished in Internationale Situationniste 1958-1969, Amsterdam, van Gennep, 1970 and in Internationale Situationniste 1958-69, Paris, Éditions Champ Libre, 1975.

Integratie...Van wat? (Integration...of What?) in Forum XIV, nº 6, August 1959, p. 184.

Le grand jeu à venir (The Great Game to Come) in Potlatch, nº 30, 15 July 1959, p. 3-5. Republished in Docu­ments relatifs à la fondation de l’Internationale Situationniste 1948-1957, Paris, Allia, 1985, p. 255-257.

Rapport inaugural de la conférence de Munich (Inaugural Report to the Munich Conference) in Internatio­na­le Situationniste, nº 3, December 1959, p. 25-29. Republished in Internationale Situationniste 1958-1969, Amsterdam, van Gennep, 1970 and in Internationale Situationniste 1958-69, Paris, Éditions Champ Libre, 1975.

Uittreksels van brieven van Constant aan de Internationale Situationniste in de maand september 1958 (Summaries of letters from Constant to the Situationist International in the month September 1958), Paris, Bibliothèque d’Alexandrie, 1959, in cat. of the exhibition Constant: expositie van constructies en maquettes, Stedelijk Museum Amsterdam, June 1959.

Une autre ville pour une autre vie (Another City for Another Life) in Internationale Situationniste, nº 3, December 1959 p. 37-41. Republished in Internationale Situationniste 1958-1969, Amsterdam, van Gennep, 1970 and in internationale situationniste 1958-69, Paris, Éditions Champ Libre, 1975.

Z.T. in Forum XIV, nº 6, August 1959, p. 177.

La déclaration d’Amsterdam (The Amsterdam Declaration) in Internationale Situationniste, nº 2, décembre 1958, p. 31-32. Republished in Internationale Situationniste 1958-1969, Amsterdam, van Gennep, 1970 and in Internationale Situationniste 1958-69, Paris, Éditions Champ Libre, 1975.  

This is the most far-reaching of Constant’s writings about urban design as an art form.

Sur nos moyens et nos perspectives (On Our Means and Perspectives) in Internationale Situationniste, nº 2, December 1958, p. 23-27. Republished in Internationale Situationniste 1958-1969, Amsterdam, van Gennep, 1970 and in Internationale Situationniste 1958-69, Paris, Éditions Champ Libre, 1975.

In this text Constant reflects on the current state of the arts.

De eerste tekenen (The first signs) for “Phasen” exhibition, Stedelijk Museum Amsterdam, in Liga Bulletin, June 1957.Phasen was a group exhibition with Shinkichi Tajiri and Anton Rooskens curated by Willem Sandberg.

Demain la poésie logera la vie (Tomorrow Life Resides in Poetry), lecture dated Paris, 19 August 1956, written as a lecture to be given at the Primo congresso mondiale degli artisti liberi (First World Congress of Free Artists), organized by Asger Jorn and Pinot Gallizio for Mouvement Internationale pour un Bauhaus Imaginiste contre un Bauhaus Imaginaire (M.I.B.I.), held in Alba (I), 2-8 September 1956.Dutch title: In poezië zullen wij huizen. The typed manuscript is in the Constant archive at the Netherlands Institute for Art History (RKD).

This hitherto unpublished text by Constant probably dates from 1956. Thematically it has a strong affinity with ‘Tomorrow Life Will Reside in Poetry’ from the same year.

This text has its origin in a declaration of principles for the journal Art et Habitat, which Constant and Stephen Gilbert intended to devote to the ‘synthesis of the arts’ (1953). The journal was never published, however, and Constant revised and developed the text in 1955

This text appeared in Forum in 1955 and is part of a widespread debate during the 1950s. In this debate about collaboration among architects and visual artists.

Constant and Aldo van Eyck, Amsterdam 1952, 50 editions. With comments from Gerrit Rietveld Voor een spatiaal colorisme in Forum VIII, nº 10, 1953, p. 361. Republished with title Pour un colorisme spatial in Documents relatifs à la fondation de l’Internatio­nale Situationniste 1948-1957, Paris, Allia, 1985, pp. 75-84.Naar een spatiaal colorisme (Towards a spatial colorism) in Ruimte, two monthly magazine, nº 5, 1954, pp. 42-43.

Schilderijen van critici (Paintings of critics) in Mandril. Maandblad voor mensen nr. 10 (August 1951).