ChemGlobe: Lead
- Electronic, thermal, and steric data along with an isotope table.
- http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/82.html

LANL: Lead
- Properties, forms, uses, and handling.
- http://periodic.lanl.gov/elements/82.html

Wikipedia: Lead
- Properties of the element, including its history, applications, and characteristics.
- http://en.wikipedia.org/wiki/Lead

Lenntech: Lead
- Physical data, chemical properties, health and environmental effects.
- http://www.lenntech.com/Periodic-chart-elements/Pb-en.htm

EnvironmentalChemistry.com: Lead
- Atomic structure, chemical and physical properties, and table of nuclides.
- http://environmentalchemistry.com/yogi/periodic/Pb.html

USGS Minerals Information: Lead
- Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
- http://minerals.usgs.gov/minerals/pubs/commodity/lead/

ChemicalElements.com: Lead
- Basic information, atomic structure, and isotopes table.
- http://www.chemicalelements.com/elements/pb.html

It's Elemental: Lead
- Basic physical and historical information.
- http://education.jlab.org/itselemental/ele082.html

Visual Elements: Lead
- Image, uses, physical information, and key isotopes.
- http://www.chemsoc.org/viselements/pages/lead.html