Links to the various agencies and departments that make up the U.S. Government. From the Department of Agriculture to Veteran's Affairs, they're all here.
http://www.infoctr.edu/fwl/

• Department of Agriculture (USDA)
  
  http://www.usda.gov/
  
  • Foreign Agricultural Service
    
    http://ffas.usda.gov/ffas/
  • National Agricultural Library
    
    http://www.nalusda.gov/
  • Welfare Division
    
    http://www.usda.gov/fcs/welfare.htm
• Department of Commerce
  
  http://www.doc.gov/
  
  • Bureau of Economic Analysis
    
    http://www.bea.doc.gov/
• Department of Defense (DOD)
  
  http://www.defenselink.mil/
• Department of Education (DoEd)
  
  http://www.ed.gov/
• Department of Energy (DOE)
  
  http://www.doe.gov/
  
  • Energy Information Administration
    
    http://www.eia.doe.gov/
  • Labs and Facilities Server
    
    http://www.doe.gov/html/servers/labtitls.html
  • Nevada Operations Office
    
    http://www.nv.doe.gov/
  • Office of Civilian Radioactive Waste Management (OCWRM)
    
    http://www.rw.doe.gov/
  • Office of Energy Research
    
    http://www.er.doe.gov/
  • Office of Energy Safety and Health
    
    http://tis-hq.eh.doe.gov/
  • Office of Environmental Management
    
    http://www.em.doe.gov/
  • Office of Fossil Energy
    
    http://www.fe.doe.gov/
  • Office of Fusion
    
    http://wwwofe.er.doe.gov/
  • Office of Scientific and Technical Information (OSTI)
    
    http://www.osti.gov/
• Department of Health Affairs
  
  http://www.ha.osd.mil/
• Department of Health and Human Services (DHHS)
  
  http://www.os.dhhs.gov/
  
  • Administration for Children and Families (ACF)
    
    http://www.acf.dhhs.gov/
    
    • Office of Child Support Enforcement (OCSE)
      
      http://www.acf.dhhs.gov/ACFPrograms/CSE/
    • Office of State Systems (OSS)
      
      http://www.acf.dhhs.gov/programs/oss/
• Department of Housing and Urban Development (HUD)
  
  http://www.hud.gov/
• Department of the Interior
  
  http://www.doi.gov/
• Department of Justice (DOJ)
  
  http://www.usdoj.gov/
  
  • Antitrust Division
    
    http://www.usdoj.gov/atr/atr.htm
  • Bureau of Justice Statistics
    
    http://www.ojp.usdoj.gov/bjs/
  • Federal Bureau of Prisons
    
    http://www.bop.gov/
  • Office of Justice Programs (OJP)
    
    http://www.ojp.usdoj.gov/
  • Violence Against Women Office
    
    http://www.usdoj.gov/vawo/
• Department of Labor (DOL)
  
  http://www.dol.gov/
  
  • Bureau of Labor Statistics
    
    http://stats.bls.gov/
• Department of State Foreign Affairs Network (DOSFAN)
  
  http://www.state.gov/
• Department of Transportation (DOT)
  
  http://www.dot.gov/
  
  • Bureau of Transportation Statistics
    
    http://www.bts.gov/
  • Federal Highway Administration
    
    http://www.fhwa.dot.gov/
  • National Highway Traffic Safety Administration (NHTSA)
    
    http://www.nhtsa.dot.gov/
• Department of Treasury
  
  http://www.ustreas.gov/
• Department of Veterans Affairs (VA)
  
  http://www.va.gov/

    See also :

• The White House
  
• U.S. Congress
  
• U.S. Federal Agencies
  
• U.S. Military
  
• U.S. Government Laboratories