Erwin BlumenfeldBevölkerung der Vereinigten Staaten” (”Population of the United States”) 1921-1924.

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In her new book “Erwin Blumenfeld: I Was Nothing But a Berliner, Dada Montages 1916-1933", Helen Adkins collects and annotates the little-seen dada colleges of Erwin Blumenfeld.  Although Blumenfeld was a famous and much sought-after fashion photographer, his colleges were mostly "given away as gifts and sent as letters" and are only being rediscovered now.