Posters for the Cologne Thumper 2009 that was given to German designer Ingo Maurer. The information should be printed with glow-in-the-dark ink so it could be only visible at night.
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Cologne Thumper | Kölner Klopfer
Posters for the Cologne Thumper 2009 that was given to German designer Ingo Maurer. The information should be printed with glow-in-the-dark ink so it could be only visible at night.