In May 2008, White Cube gallery exhibited 13 apparently authenticated watercolours painted by Adolf Hitler, to which the brothers had added hippie motifs. Jake Chapman described most of the dictator's works as "awful landscapes" which they had "prettified". The central device and context of this exhibition were strikingly similar to those of the artist Ira Waldron in her project "Die Damen mit den Hündchen", first exhibited at the Thessaloniki Biennale of Contemporary art in May 2007. Waldron also entered into an artistic duel with Hitler, seen as a mediocre bohemian artist, by overlaying her motifs and colour on to expanded copies of thirteen of his drawings.