Born on April 18, 1889, in Remagen am Rhein into a Catholic family, Karl Nierendorf was educated in Cologne. He worked as a banker before World War I, but his career was disrupted in 1913 by the social upheaval in the Weimar Republic. One of his acquaintances, an art collector, introduced him to the Swiss-born German painter Paul Klee who persuaded him to attempt a career as an art dealer. The two would remain close. When Klee died in June 1940, Nierendorf published Paul Klee Paintings Watercolors 1913 to 1939 (New York: Oxford UP, 1941) as a tribute and an act of friendship. [Read more…] about The Migration of European Modern Art to New York: Solomon Guggenheim & Karl Nierendorf