File:Escher Alhambra Tessellation Sketch.jpg
Summary
{{Non-free use rationale 2
|Description = Sketch by M. C. Escher of a Moorish mosaic tessellation in the Alhambra, 1936. The sketch appears to be inverted with respect to the Alhambra tiling; Escher has marked a circled X at the top of the sketch, while its neighbour has a circled X at the bottom, so he may have turned the page for convenience while drawing.
|Source = Original publication: The World of M. C. Escher
Immediate source: as above
|Date = 1974
|Author = M. C. Escher
|Article = M. C. Escher
|Purpose = It illustrates the painstaking attention Escher started to give to tessellations from the Alhambra in 1936.
|Replaceability = None exists; all of Escher's drawings are in copyright.
|Minimality = The image is the only scan of an Escher tessellation study in the article and indeed on Wikipedia. It is used at poor resolution.
|Commercial = The image has been published at much better resolution in the named source for 40 years, where it forms only 1/4 of an image. The drawing is itself a technical detail alongside many of Escher's far more appealing artworks.
}}
Licensing
{{Non-free 2D art}}