http://www.gc.maricopa.edu/english/topicarg.html
http://www.lib.umich.edu/govdocs/hsdebate.html
International Debate Education Association
http://www.debatabase.org/
http://www.publicagenda.org/issues/issuehome.cfm
Research on Opposing Viewpoints
http://www.csulb.edu/library/subj/opposing/
Social Issues: Multonomah County Library. Homework Center
http://www.multcolib.org/homework/sochc.html
http://www.youdebate.com/