Dietrich von Hagenbach is an immigrant to the USA from Germany. He studied science and literatur. He retired from the photoindustry, and now only writes books, 12 already published in German and some translated also into English. He lives in Denver, Colorado.Reseña del editor:
Life and work of the socially concerned painter Heinrich Zille in Berlin, 1858 - 1929. Edited wih commentary and historical review by Dietrich von Hagenbach
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