Olle Baertling (1911-1981), "The angles of Baertling. Open form infinite space. From cinétism to open form 1949-1968". Portfolio with 35 silkscreens in colours, 1968, each signed in ball point pen and numbered 135/300. Printed by Selecta Ateljén Björn Hemberg, Stockholm, published by Rose Fried Gallery, New York/Galerie Denise René, Paris/Galerie Aronowitsch, Stockholm. Varying size (19 x 25 - 39 x 19 cm). Loose in blue acrylic case. Portfölj "The angles of Baertling. Open form infinite space. From cinétism to open form 1949-1968". Portfölj med 35 färgserigrafier, 1968, samtliga signerade med kulspetspenna 135/300, tryckt av Selecta Ateljén Björn Hemberg, Stockholm, utgiven av Rose Fried Gallery, New York/Galerie Denise René, Paris/Galerie Aronowitsch, Stockholm. Varierande format (19 x 25 - 39 x 19 cm). Förvarade i portfölj av blå genomskinlig akrylplast.