"August Albert Zimmermann (born Zittau, September 20, 1808 - died Munich, October 18, 1888) was a German painter. He was the brother of painters Max, Richard, ...
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and Robert Zimmermann, and served as Max's teacher. He was primarily self-taught as a painter, but did study at the Dresden Academy of Fine Arts and the Academy of Fine Arts Munich." - (en.wikipedia.org 21.01.2021)
