The Library's collection of e-books is growing all the time. These handbooks are available online.
You might like to also look at: PsycBooks which is a full-text database of Psychology books (over 1700!) and chapters from the American Psychological Association (APA).
Handbook of Experimental Neurology by 
The Handbook of Clinical Neuropsychology by 
Handbook of the Behavioral Neurobiology of Serotonin by 
Handbook of Amygdala Structure and Function by 
The Wiley Handbook on the Cognitive Neuroscience of Memory by 
The Oxford Handbook of Cognitive Neuroscience, Volume 1: Core Topics by 
Oxford Handbook of Cognitive Neuroscience, Volume 2, The Cutting Edges by 
Essential Neuroscience by The Library's collection of e-books is growing all the time. These encyclopedia books are online:
Corsini Encyclopedia of Psychology
Encyclopedia of Behavioral Neuroscience by 
Encyclopedia of Neuroscience
Encyclopedia of Neuroscience by 
Encyclopedia of the Human Brain by The Library's collection of e-books is growing all the time. These dictionaries are online:
A Dictionary of Psychology by 
A Dictionary of Biomedicine by 
A Dictionary of Neurological Signs by These books are a great starting point for your research and some are on Course Reserve:
Oxford Handbook of Developmental Behavioral Neuroscience by 
Neuroscience, 5th ed. by 
The Wiley Handbook on the Cognitive Neuroscience of Memory by The Oxford Handbook of Cognitive Neuroscience by 
Neuroscience: exploring the brain by 
Essential Neuroscience, 3rd ed. by 
Basic Clinical Neuroscience, 3rd ed. by