Euro Union is a service by the Delegation of the European Commission to the United States that provides information on the EU, incl. news, relevant documents (eg white papers), and research tools. http://www.eurunion.org/infores/euindex.htm highlights a thorough index of EU websites composed of many interesting links - a wealth of resources.
http://www.eurunion.org/partner/home.htm goes into detail as regards the EU-US partnership with references to historical information, speeches and culture. http://www.eurunion.org/infores/euguide/euguide.htm provides a guide on the EU for Americans.