Dedicated to identify technological or other methods that could help reduce access by minors to harmful material on the internet... 

http://www.copacommission.org/

IWF is an organization working with the internet industry, police and Government. If you come across child abuse images hosted anywhere in the world, you may report them here... 

http://www.iwf.org.uk/

Provides contact details of field offices of the FBI in major cities throughout the United States and San Juan, Puerto Rico... 

http://www.fbi.gov/contact/fo/fo.htm

Non-profit organization that works with the U.S. Customs Service and the FBI in enforcing anti-child pornography laws. Includes their goals, FAQ, press releases, details of members, and a facility to report suspected sites... 

http://www.asacp.org/