Alexander Georg Rudolf Bauer was a German-born painter who was involved in the avant-garde group Der Sturm in Berlin, and whose work would become central to the non-objective art collection of Solomon R. Guggenheim.

Born in Lindenwald, county Wirsitz near Bromberg, Province of Posen, to middle class parents, Bauer’s family moved to Berlin in his youth. Bauer made art from an early age, but his father was disapproving, even beating him when Bauer announced his intention to go to art school. In spite of this discouragement Bauer left home and attended the Academy of Fine Arts. Bauer went through several phases in his artistic expression, including a Cubist period as witnessed by this poster for a 1918 exhibition of Der Sturm in Dresden. Bauer supported himself as an artist by creating illustrations and caricatures for some of the major magazines and newspapers of the day.

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