Illuminations  
   Critical theory resource site, with a strong focus on the Frankfurt School and its legacy. Provided by Prof. D. Kellner.
   http://www.uta.edu/huma/illuminations/

Introduction to the Frankfurt School  
   A concise look at the background and history of this group. Features a summary of each member's contribution to contemporary social thought.
   http://home.cwru.edu/~ngb2/Pages/Intro.html

Recent Philosophy: The Frankfurt School  
   A concise overview of this group of social thinkers, from the Radical Academy.
   http://radicalacademy.com/adiphifrankfurtschool.htm

Walter Benjamin and Max Horkheimer: From Utopia to Redemption  
   A paper by Dr. Ilan Gur-Ze'ev, in the Journal of Jewish Thought and Philosophy, 8 (1998).
   http://construct.haifa.ac.il/~ilangz/Utopia4.html

Wikipedia: Frankfurt School  
   Article describing the development of the school and its ideas, and its critics.
   http://en.wikipedia.org/wiki/Frankfurt_School