American Public Health Association
http://www.apha.org/

American Society of Testing Materials
http://www.astm.org

AOAC International
http://www.aoac.org

Bureau of Alcohol, Tobacco and Firearms
http://www.atf.treas.gov/

Centers for Disease Control and Prevention
http://www.cdc.gov/

Code of Federal Regulations
http://www.access.gpo.gov/nara/cfr/cfr-table-search.html

Codex Alimentarius Commission
http://www.fao.org/waicent/faoinfo/economic/esn/codex/codex.htm

Department of Commerce
http://www.doc.gov/

National Institute of Standards and Technology
  http://www.mist.gov/

  National Conference on Weights and Measures
  http://ts.nist.gov/ts/htdocs/230/235/owm.home.htm#name-3

National Oceanic and Atmospheric Administration
  http://www.noaa.gov/

National Marine Fisheries Service
  http://kingfish.ssp.nmfs.gov/

Environmental Protection Agency
http://www.epa.gov/

Federal Trade Commission
http://www.ftc.gov/

Food Chemicals Codex
http://www2.nas.edu/codex

Food and Drug Administration
http://www.fda.gov

Center for Food Safety & Applied Nutrition
  http://vm.cfsan.fda.gov/list.html

  Food Labeling and Nutrition
  http://vm.cfsan.fda.gov/label.html

  Hazard Analysis Critical Control Point
  http://vm.cfsan.fda.gov/~1rd/haccpsub.html

  Milk Safety References
  http://vm.cfsan.fda.gov/~ear/prime.html

  Pesticides, Metals & Industrial Chemicals
  http://vm.cfsan.fda.gov/~1rd/pestadd.html

  Seafood Information and Resources
  http://vm.cfsan.fda.gov/seafood1.html

International Organization for Standardization
http://www.iso.ch/

National Shellfish Sanitation Program
http://vm.cfsan.fda.gov/~ear/nsspman.html

U.S. Customs Service
http://www.customs.ustreas.gov/

U.S. Department of Agriculture
http://www.usda.gov/

Quality Standards
http://www.ams.usda.gov/standards/

Laboratory Testing Program
http://www.ams.usda.gov/labserv.htm

Food Safety and Inspection Service
http://www.usda.gov/fsis

HACCP/Pathogen Reduction
http://www.usda.gov/agency/fsis/imphaccp.htm

Grain Inspection, Packers and Stockyards Administration
http://www.usda.gov/gipsa