ChemGlobe: Seaborgium
- Electronic data and isotope table.
- http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/106.html

LANL: Seaborgium
- Basic information and history.
- http://periodic.lanl.gov/elements/106.html

ChemicalElements: Seaborgium
- Basic information.
- http://www.chemicalelements.com/elements/sg.html

Wikipedia: Seaborgium
- History and basic information on the element.
- http://en.wikipedia.org/wiki/Seaborgium

Lenntech: Seaborgium
- Physical data and chemical properties.
- http://www.lenntech.com/Periodic-chart-elements/Sg-en.htm

EnvironmentalChemistry.com: Seaborgium
- Atomic structure and table of nuclides.
- http://environmentalchemistry.com/yogi/periodic/Sg.html

It's Elemental: Seaborgium
- Basic physical and historical information.
- http://education.jlab.org/itselemental/ele106.html

Visual Elements: Seaborgium
- Physical information, ionisation energies, and key isotopes.
- http://www.chemsoc.org/viselements/pages/seaborgium.html