Zero in Rotterdam, exhibitions organized by Hans Sonnenberg

(1) Castellani Manzoni Schoonhoven. Catalogue for the group show at Galerie Delta Rotterdam, 1962. 23.5 x 22 cm, 12 pp. b/w ills. with a brief text in Dutch by H. Sonnenberg and J.J. Schoonhoven. Cover slightly toned. Rare.

(2) Announcement flyer for the above show, folded for mailing purposes. (3) Zero 0. Invitation card for the exhibition at Rotterdamsche Kunstkring, July 1959. Contributors include Manzoni, Schoonhoven, Tajiri et al. (total 3)