General Resources

Budget of the United States Government Full download available.
Economic Reports of the President
Eco5.com (large financial, economic, and political link collection)
Economagic.com: Economic Time Series Page
Economic Indicators, 1995 - 2017
Economy.com
Federal Reserve Board of Governors
Federal Reserve Economic Data (FRED)
FreeLunch.com (part of the Economy.com network)
Fedstats Federal Statistics Clearinghouse.
German National Library of Economics (ZBW Kiel)
Internet Law Library
EconStats Source for Economic and Financial Data
Leading Economic Indicators from the Conference Board
National Science Foundation
Statistical Abstracts of the United States
Superintendent of U.S. Government Documents
USIA, the United States Information Agency
Vitalnet (System for Analyzing Health Data)
Government Agencies
Panel Study of Income Dynamics (PSID)

International Data

Penn World Tables
Europa, home site of the European Union.
International Monetary Fund
Organisation for Economic Cooperation and Development (OECD) Statistical Directorate
  OECD Economics Department
  OECD Frequently Requested Statistics
  
Organization of American States
World Bank
World Business Environment Survey (a World Bank, multi-partner project)
Worldwide Governance Research Indicators Dataset (from the World Bank)
Business Environment and Enterprise Performance Survey (BEEPS) Interactive Dataset
(collaborative project between WBI, ECA-PREM, and EBRD)
Federation of International Trade Associations
Cross-National Equivalent File