See also:

• Science: Chemistry: Elements: Noble Gases  (2)

ChemGlobe: Helium - - Electronic, thermal, and steric data along with basic information.

ChemicalElements.com: Helium - - Basic information, atomic structure, and table of isotopes.

Corrosionsource.com: Helium - - History, sources, properties, isotopes, and uses.

EnvironmentalChemistry.com: Helium - - Atomic structure, chemical and physical properties, and table of nuclides.

Especiál Gas Inc.: Helium - - Numeric data, uses, and general information.

It's Elemental: Helium - - Basic physical and historical information.

LANL: Helium - - History, sources, properties, and uses.

Lenntech: Helium - - Physical data, chemical properties, and health effects.

USGS Minerals Information: Helium - - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).

Visual Elements: Helium - - Image, animation, discovery, uses, physical information, and key isotopes.

WebElements: Helium - - Extensive information on history, uses, occurrence, and properties of the element.

Wikipedia: Helium - - Properties of the element, including its history, applications, and characteristics.