Janco made his final contribution to the Dada adventure in April 1919 , when he designed the masks for a major Dada event organized by Tzara at the Saal zur Kaufleutern .
Which degenerated into an infamous mass brawl .
Janco made his final contribution to the Dada adventure in April 1919 , when he designed the masks for a major Dada event organized by Tzara at the Saal zur Kaufleutern , and which degenerated into an infamous mass brawl .