10.4 x 24.3cm, 2pp artist's announcement card printed in green on cream card stock. The card lists the various events/actions on the back in the form of a pseudo menu.

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Original 14.2 x 25.8cm manilla envelope over rubber stamped by Hidalgo on the back with his address and "Impressos" on the front. The envelope is had addressed in ink to the musician and Fluxus artist David Tudor probably by Hidalgo. Stamped and franked but neatly opened.

17 x 9.6 cm, 2pp artist's card printed in black on recto and verso on brown card stock. On the front is a text in Spanish "Nuestro calendario universal, como a nadie se le escapo, era un objeto sexual de combinaciones multiples. Teniendo en cuenta numerosas sugerencias de nuestros amigos y seguidores, enviamos ahora este suplemento, a la intencion de todas aquellas personas a quienes las dimensiones de los troqueles del calendario resultan excesivas en funcion de sus posibilidades. Las nuevas formas y tamaños, que esperamos sean mas adecuados, se han realizado siguiendo las sugerencias recibidas hasta la fecha. Teniendo en cuenta dichas sugerencias. and on the back of the card has a text: "Y recuerde que el asunto de la tranlarenda no tiene enmienda".

This is a supplement for the Universal Calender issued by Zaj in 1967 with symbols which can be utilised in the calendar. VG+.

13 x 8.5cm, die cut egg-shape announcement card printed pink on white.

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Hand printed (rubber stamp) envelope with Hidalgo's address on one side and 'Impresos" on the other.

Both fine and rare.

14.5 x 10.5cm, 1pp typographic design announcement card for three separate events inducing a Fluxus Concert in New York by Alison Knowles and Dick Higgins (in the foyer of the Forum Theater, New York) and a Zaj Concert with Juan Hidalgo and Tomas Marco in Madrid. The card has been altered by rubber stamp impression to give the right date for the Zaj concert. Scarce. VG+.

20 x 21cm, 204pp plus card covers, The first edition of this famous exhibition catalogue published in conjunction with the major conceptual art show held at Stadtisches Museum, Leverkusen in October 1969 edited by Konrad Fischer and Rolf Wedewer. Cover design by Sol LeWitt.

The exhibition included significant contributions by Arnatt Keith, Baldessari John, Barry Robert, Baxter Iain, Becher Bernd + Hilla, Bochner Mel, Boetti Alighiero, Broodthears Marcel, Brouwn Stanley, Buren, Burgin Victor, Burgy Donald, Butler Eugenia P., Calzolari Pier Paolo, Cotton Paul, Darboven Hanne, Dibbets Jan, Fulton Hamish, Gilbert & George, Graham Dan, Huebler Douglas, Jackson Richard, Kaltenbach Stephen, Kawara On, Kirby Michael, Kosuth Joseph, Lamelas David, Lewitt Sol, McLean Bruce, Nauman Bruce, Penone Giuseppe, Piper Adrian, Polke Sigmar, Prini Emilio, Raetz Markus, Ruppersberg Allen, Ruscha Edward, Sandback Fred, Sladden Richard, Smithson Robert, Ulrichs Timm, Venet Bernar, Weiner Lawrence, Zaj (Marchetti Walther). Texts in German and English with an introduction by Rolf Wedewer and texts by the artists and exhibition histories for each artist. Illustrated in black-and-white throughout.

Very slightly grubby wrappers and one dent to the spine bottom left else VG.

One of only 550 copies sadly this example has a damp stain at the lower part of the spine affecting the last 25 pages and the front cover - see photographs - else VG but it is a very hard to find book.

30 x 21cm, 1pp. Printed green on card. A putative library of avant garde and mostly Fluxus material from a wide range of artists including Eric Andersen (who we believe organised this initiative), George Brecht, Ken Friedman, Jan Grunwald, Al Hansen, Dick Higgins, Joe Jones, Allan Kaprow, Alison Knowles, Arthur Kopcke, Jean Jacques Lebel, Jackson MacLow, Yoko Ono, Robin Page, Ben Patterson, Tomas Schmit, Ben Vautier, Emmett Williams, Zaj and La Monte Young.

Two separate mimeographic leaflets -one  8 x 21cm, 1pp, a promotional  leaflet for a one day happening and Fluxus event organised by Wolf Vostell that took place on September 25th, 1966.

The other is 14 x 15cm, 1pp and is an artist designed announcement/concrete poetry work by Zaj (Tomas Marco, Juan Hidalgo, José Castillejo and Walter Marchetti ). Folded in two to allow posting. Fine. Very scarce.

30 x 21cm, 1pp, Mimeographic leaflet for a one day happening and Fluxus event that took place on September 25th, 1966. Primarily organised by Wolf Vostell, artists included the Spanish Fluxus group Zaj , including Tomas Marco, Juan Hidalgo, José Castillejo and Walter Marchetti were invited, from New York Dick Higgins and Alison Knowles took part, Bernhard Höke and Vagelis Tsakiridis arrived from Berlin and Wolf Vostell from Cologne , Different actions often took place simultaneously and spanned a period of four and a half hours and the design for the leaflet is by Vostell. A bit browned and discoloured in parts and folded twice - but very scarce.

18 x 23cm, 1pp. Artist (Marchetti) designed card (probably released during the winter holidays) printed silver on blue. One slight dog ear bottom left else VG. Very scarce.