Jorge Agustín Nicolás de Santayana  
   Article and bibliography at the Books and Writers website.
   http://www.kirjasto.sci.fi/santayan.htm

George Santayana Themes and Sites  
   Links to a wide range of resources about Santayana and quotations from his works organized by recurring themes in his philosophy, by T.P. Davis.
   http://members.aol.com/santayana/

The Critical Edition of Works by George Santayana  
   Collecting and publishing a critical edition of the works, edited by Herman J. Saatkamp Jr.
   http://www.iupui.edu/~santedit/

Stanford University - George Santayana  
   Entry in the Stanford Encyclopedia by Herman Saatkamp.
   http://plato.stanford.edu/entries/santayana/

MSN Learning & Research: Santayana, George  
   Short biography.
   http://encarta.msn.com/encnet/refpages/RefArticle.aspx?refid=761560883

University of Waterloo - Overheard in Seville: Bulletin of the Santayana Society  
   Journal dedicated to the study of Santayana's life and work. Includes tables of contents, PDF files of many articles.
   http://www.math.uwaterloo.ca/~kerrlaws/Santayana/Bulletin/seville.html

Columbia Encyclopedia: Santayana, George  
   Life, philosophy, and bibliography.
   http://www.bartleby.com/65/sn/Sntyan.html