Each internal page of the leaflet has a single, hand painted, artist stamp collaged onto it. The work was done concurrent to an exhibition "Lettrisme & Hypergraphie" held at the Galerie Stadler in 1964; the Sackner Archive holds the ordinary and deluxe edition of this catalogue. According to Frederic Acquaviva, all of the drawings were done by Jacques Spacagna including the forging of signatures. -- Source of annotation: Marvin or Ruth Sackner.

This catalogue was edited by Luis Perez-Oramus. Amazon.com "Leon Ferrari (born in 1920) and Mira Schendel (1919-1988) are among the most significant Latin American artists of the twentieth century. Active simultaneously in the 1960s, 1970s and 1980s in the neighboring countries of Argentina and Brazil, they found inspiration in the written word and in the eloquence of spoken language, and they both used language as important visual subject matter. Published to accompany the first comprehensive survey of the work of each artist in the United States, this essential catalogue presents new insights into the artists' groundbreaking work and examines the connections and collisions between the visual arts, writing, politics and religion in their oeuvres." -- Source of annotation: Marvin or Ruth Sackner.