M.C. Escher Gallery

Searchable gallery of artist's works. Also available are downloadable desktop patterns and wallpapers.
http://eschergallery.com

Fine Arts Museums of San Francisco Imagebase

Lots of "zoomable" reproductions of Escher's art.
http://search.famsf.org/4d.acgi$Search?list&=1&=&=and&=Yes&=Escher%20&=&=&=

M.C. Escher

Art, news, history, copyright and M.C. Escher Foundation information.
http://www.mcescher.com

Mathematical Art of M.C. Escher

A detailed and liberally illustrated essay on the signifigance of Escher's artwork for the student of mathematics.
http://www.mathacademy.com/pr/minitext/escher/index.asp

MC Escher

Everything you will ever need to know or see about Escher: biography, illusions, and tesselations.
http://gonzo2236.tripod.com/escher.html

Zvi Har'El's M.C.Escher Collection

Image gallery with 84 drawings.
http://www.math.technion.ac.il/~rl/M.C.Escher/

Escher Art Collection

A collection of images of artist's works.
http://www.cs.unc.edu/~davemc/Pic/Escher/

The world of Escher

An online collection of the works of Escher, along with an online store.
http://www.worldofescher.com/

Maurits Cornelius Escher: A biography

A biography of M.V. Escher.
http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Escher.html

Albrecht Dürer (1471-1528)

Biography and several images.
http://sunsite.auc.dk/cgfa/durer/index.html

Leiden University - Escher and the Droste Effect

Student project aiming to visualize the mathematical structure behind the 'Print Gallery'.
http://escherdroste.math.leidenuniv.nl/

Artcyclopedia: M.C. Escher

Guide to art museum sites and image archives where artworks of M.C. Escher can be viewed online.
http://artcyclopedia.com/artists/escher_mc.html

The Oldest Escher Collection on the Web

A large collection of M. C. Escher's art, presented with permission of the copyright owner.
http://home.comcast.net/~davemc0/Escher/

100 years of Escher

Site celebrating the centennial of M.C. Escher; includes a biography of the man.
http://www.iproject.com/escher/escher100.html