Covers
This cover with impossible David star from XIX century French book "Ténèbres" by Alcide Morin.
The image was found at http://gallica.bnf.fr/ark:/12148/bpt6k5526392w.image.r=illusions+d'optique.f5.langFR
Impossible World
This cover with impossible David star from XIX century French book "Ténèbres" by Alcide Morin.
The image was found at http://gallica.bnf.fr/ark:/12148/bpt6k5526392w.image.r=illusions+d'optique.f5.langFR