14.5 x 22.8cm, black and green offset letterhead created for the vastly important "First World Congress of Free Artists" which brought together Enrico Baj, Jacques Calonne, Constant, Giuseppe Pinot Gallizio, Asger Jorn, Piero Simondo, Ettore Sottsass Jr, Elena Verrone (from the International Movement for an Imaginist Bauhaus), Gil J. Wolman (from the Lettrist International/Potlatch), Sandro Cherchi, Franco Garelli  , Jan Kotik, Pravoslav Rada (Czechoslovakia), Charles Estienne, and Klaus Fischer to discuss joint projects.

The importance of this meeting cannot be underwritten - it brought together many of the main currents of the European International Avant Garde and laid the foundations for the eventual formation of the International Situationists.

JOINT:

Alba: Laboratorio Sperimentale Del Movimento Internazionale Per Una " Bauhaus Immaginista", 1956

12.3 x 15.5cm, green and black on white printed envelope for the same event.

Price is for both items together - the stationery for a major landmark in European political and art history.

Both VG+ if mildly browned.

15 x 11.4cm, 8pp announcement brochure for this series of Cobra related events which we understand never actually took place. Jorn, Dotremont, Alechinsky, Pedersen, Atlan, Constant, Corneille, Svanberg, Bury, Havrenne, and others were all meant to perforim or attend openings. Fine.

27 x 21cm, 2pp announcement card with recto a full size colour image of a Constant painting. Verso gallery details.

22 x 17cm, 24pp. Original card covers. Exhibition catalogue documenting the production of the very rare artists' book / portfolio publication from 1952 (the title Het uitzicht van de duif translates as the 'View of the Dove') of which only 129 were originally published. This catalogue reproduces all of the folios in colour with annotations and an essay. One paper scuff on pictorial front covers (0.6cm dia.) otherwise very good. 

24 x 17cm, unpaginated (c. 48pp) including several pages of plates in b/w of early paintings and maquettes. Original wrappers. Exhibition catalogue with a text by Jos de Gruyter, H. van Haaren and the artist himself. Very good example of a very scarce book - one diagonal former crease on rear wrappers.

23 x 23, 12pp. Three full-page (two in colour) reproductions of designs by the artist + two b/w photo-portraits. Wrappers after the artist's holograph signature. First edition of this uncommon catalogue detailing (then) recent ideographic pieces by the artist and erstwhile utopian urban planner. This example signed by Constant. Fine estate.

24 x 17.2cm, 56pp. 43 works reproductions of works (of which 6 are full page in colour) by the artist. Pictorial wrappers with French folds. First edition of this monograph detailing Constant's oeuvre from Cobra to 'New Babylon'. A close to fine example although some minor rubbing to wrappers.

21 x 21cm, 26pp in card covers. Exhibition catalogue with 13 reproductions of early architectural drawings and short texts by the artist. One crease down back cover, former owner's name on front cover in ink top right and minor fading around spine but this is a very scarce catalogue.

21 x 21cm, 12pp in printed card covers, exhibition catalogue with 13 b/w photographs of the artist with his Cobra and IS buddies and 2 reproductions of works. VG.

24 x 30cm, 20 pp. Stapled mimeo typescript in paper folder with pasted-down title label. An insightful, and to our knowledge (to date) unpublished study of Constant's projects. Fine estate in folder with some wear including a short closed tear. Decidedly rare.