U.S. Government
 

• U.S. Trade Representative's Office
• U.S. International Trade Commission
• International Trade Administration , Department of Commerce
• Economic Report of the President (data link), Council of Economic Advisers
• Statistical Abstract of the United States
  

International Organizations
 

• World Trade Organization
• World Bank - Trade Research
• The European Union
  
• OECD
• League of Nations Statistical Abstracts (interwar data)

Think-Tanks
 

• Cato's Center for Trade Policy Studies
• Peterson Institute for International Economics
• Brookings Institution
• Economic Policy Institute
• Public Citizen's Global Trade Watch

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