Berlin and the Swedish Avant-Garde – GAN, Nell Walden, Viking Eggeling, Axel Olson and Bengt Österblom

Link:
http://monoskop.org/images/9/9b/Ahlstrand_Jan_Torsten_2012_Berlin_and_the_Swedish_Avant-Garde_GAN_Nell_Walden_Viking_Eggeling_Axel_Olson_and_Bengt_Osterblom.pdf