The Interpretation of Dreams  
   The Third Edition of Sigmund Freud's seminal work on dream interpretation, as translated by A. A. Brill.
   http://www.psychwww.com/books/interp/toc.htm

Nightmares and Disorders of Dreaming  
   General description of types of dream disorders and medications that may cause them. From the American Academy of Family Physicians.
   http://www.aafp.org/afp/20000401/2037.html

Working With Traumatic Dreams Toward Healing  
   Discusses dreams as a symptom of post-traumatic stress disorder. From Traumatology, a publication of the Green Cross Foundation.
   http://www.fsu.edu/~trauma/a4v5i3.html

On Dreams  
   Aristotle considers the implications of dreaming with regard to the nature of perception. Beyond his insights into the nature of the mind, his writing gives us a glimpse of the bizarre and sometimes humorous beliefs held before modern science.
   http://classics.mit.edu/Aristotle/dreams.html

On Prophesying by Dreams  
   Aristotle recognizes that all beings, even animals, dream, and discounts claims of a divine source and of their ability to foretell the future.
   http://classics.mit.edu/Aristotle/prophesying.html

10,000 Dreams Interpreted by Gustavus Hindman Miller  
   The complete online HTML text, extensively annotated, with references cross-linked to the Encyclopedia of the Self. Victorian references demonstrate the cultural bias inherent in symbol dictionaries.
   http://www.selfknowledge.com/305au.htm

A Hermeneutic and Rhetoric of Dreams  
   An essay discussing the apparent meaning in dreams by Cyd C. Ropp at Janus Head
   http://www.janushead.org/3-1/cropp.cfm

Montague Ullman  
   Collection of writings on the value of dreams, experiential dream groups and parapsychology.
   http://siivola.org/monte/