Nul/Zero, lot of 2

Nul - Armando Henk Peeters Schoonhoven / Zero - Mack Piene Uecker. The Hague, Gemeentemuseum, 1964. Catalogue for the exhibition at Gemeentemuseum Den Haag in 1964. The booklet opens on two sides, one presenting the Dutch participants: Armando, Schoonhoven en Henk Peeters, the other the German artists Mack, Piene and Uecker.
Also includes the invitation card for the opening on March 19 1964. Rare early Zero catalogue, cover is spotted but overall in good shape. + Group Zero. New York, Arno/Worldwide, 1968. Reissue of a catalogue originally published for the show at the Institute of Contemporary Art, Philadelphia in 1964.