Lettrists A lot by I. Isou (1925-2007) and M. Lemaître (1926-2018). About 1967. Etching. Various sizes. Meeting of 5 perfect proofs on vellum, numbered and signed in pencil, the 2 pl. of Lemaître dated "1967". All margins. Edition of 20 or 30 proofs. Joint: Jacques Hérold (1910-1987). Pl. for the portfolio Brunidor 2. 1947-1952. Lithograph. 280 x 377 mm. Printed in colors. Perfect proof on white vellum, numbered and signed in pencil. All margins. Edition of 100 proofs. R. Altmann ed. Set. 6 p.