Government
- Agency for Toxic Substances and Disease Registry (ATSDR)
- Alderman Government Documents
- Census Bureau (US)
- Centers for Disease Control (CDC)
- Code of Federal Regulations
- Environmental Protection Agency (EPA)
- FedWorld Information Network
- Food & Drug Administration (FDA)
- Health & Human Services (DHHS)
- Library of Congress
- National Institute of Environmental Health Sciences (NIEH)
- National Institutes of Health (NIH)
- Patent & Trademark Office (US)
- Supreme Court Decisions (1990-present)
- THOMAS: Legislative Information