"Paul Cassirer (21 February 1871, in Görlitz – 7 January 1926, in Berlin) was a German art dealer and editor who played a significant role in ...
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the promotion of the work of artists of the Berlin Secession and of French Impressionists and Post-Impressionists, in particular that of Vincent van Gogh and Paul Cézanne." - (en.wikipedia.org 10.08.2021)