Seaborgium

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

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

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

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

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

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

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

WebElements: Seaborgium - Information on history, isolation, and properties.
www.webelements.com/webelements/elements/text/Sg/key.html

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