![](https://artviewer.org/wp-content/uploads/2019/05/Helmut-Middendorf-at-Eleni-Koroneou-Gallery-Painting-1-1007x1200.jpg)
Artist: Helmut Middendorf
Exhibition title: Knock, Knock (Pictures within pictures) New paintings and collages
Venue: Eleni Koroneou Gallery, Athens, Greece
Date: April 5 – June 8, 2019
Photography: all images copyright and courtesy of the artist and Eleni Koroneou Gallery, Athens
![](https://artviewer.org/wp-content/uploads/2019/05/Helmut-Middendorf-at-Eleni-Koroneou-Gallery-1-1200x800.jpg)
![](https://artviewer.org/wp-content/uploads/2019/05/Helmut-Middendorf-at-Eleni-Koroneou-Gallery-Collages-5-973x1200.jpg)