Photomontage © Erwin Blumenfeld, 1933, Adolf Hitler, Collage / Germany Blumenfeld was a famous American photographer of German origin. In the 1930s, he published collages mocking Adolf Hitler. One of his 1933 photocollages of Hitler was exhibited in Paris in 1937 but had to be withdrawn because the German Ambassador was so incensed by it. The Germans got to see it anyway. The United States Air Force dropped millions of copies of this photograph over German cities in 1943.