Rafa T. Prinke  
   Some facts, thoughts and speculations related to the Voynich Manuscript.
   http://hum.amu.edu.pl/~rafalp/HERM/VMS/vms.htm

Stolfi's Voynich Stuff  
   Includes extensive studies by the author including grammar paradigms and word frequency scatter-plots.
   http://www.dcc.unicamp.br/~stolfi/voynich/

The Voynich Galleries  
   Black and white images of pages with drawings of herbal plants in the Manuscript.
   http://www.geocities.com/Athens/Delphi/8389/voygal1.htm

Letters to God's Eye  
   John Stojko's claim that the manuscript is written in vowel-less Ukrainian.
   http://home.att.net/~oko/voynich/voynich.htm

The Voynich Manuscript  
   Museum of Hoaxes article on the Voynich Manuscripts.
   http://www.museumofhoaxes.com/voynich.html

Voynich Manuscript  
   Mailing list, introductory information, links to related sites.
   http://www.voynich.net/

History of Voynich Manuscript  
   An illustrated overview of discovery and attempts to translate.
   http://www.crystalinks.com/voynich.html

Wikipedia: Voynich Manuscript  
   Article discussing the manuscript, its history and theories of its authorship, content and language.
   http://en.wikipedia.org/wiki/Voynich_Manuscript

NASA's Astronomy Picture of the Day - The Mysterious Voynich Manuscript  
   Image and discussion of one drawing in the book that appears to deal with astronomy.
   http://antwrp.gsfc.nasa.gov/apod/ap050122.html