hand-made mixed media collage greeting card from Karel Appel to Willem Sandberg, former director of the Stedelijk Museum, Amsterdam, annotated and inscribed 'Beste meneer Sandberg, Hartelijke groeten uit New York van Aap' (inside, upper left) and signed 'Karel Appel' (inside, lower right). Folded (original state), edges and corners worn, spine split at ends, somewhat discoloured and creased, some photos and clippings slightly loose from the sheet, overall in good condition.
24.5 x 49.5 cm. (unfolded)