1. Hooker, Richard World Civilizations: An internet Classroom and Anthology Washington State University - 1996
http://www.wsu.edu:8080/~dee/GREECE/SPARTA.HTM

2. Watt, Andrew Interpreting the Holocaust - 1999
http://members.aol.com/shoahbook/holocaust/timetable_.html

3. Dolan DNA Learning Center Image Archive on the American Eugenics Movement - 2000
http://www.eugenicsarchive.org/eugenics

4. Gusmorino III , Paul Alexander Main Causes of the Great Depression - 1996
http://www.escape.com/~paulg53/politics/great_depression.shtml

5. Nordeen, Ross America's Great Depression: An Overview -2001 http://www.amatecon.com/GD/gdoverview.html

6. O'Neil, Dennis Mendel's Genetics - 2000
http://anthro.palomar.edu/mendel/mendel_1.htm

7. Coutts, Mary Carrington & McCarrick, Pat Milmoe Scope note 28:Eugenics - 1997 http://www.csu.edu.au/learning/ncgr/gpi/grn/edures/scope.28.html

8. Nichols, Sharon and Sohrabi, Peggy The Holocaust-Remembering,
Understanding, and Learning - 2000
http://www.nashville.k12.tn.us/CurriculumAwards/DuPont%20Hadley/holocaust_statistics.htm