February 8, 2011
Walter Ruttmann / Otto Umbehr, From Berlin – Symphony of a City, 1927, Gelatin silver print, 24 x 30 cm, Theaterwissenschaftliche Sammlung, University of Cologne.

Walter Ruttmann / Otto Umbehr, From Berlin – Symphony of a City, 1927, Gelatin silver print, 24 x 30 cm, Theaterwissenschaftliche Sammlung, University of Cologne.

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