USGS Minerals Information: Bismuth
Statistics and information on the worldwide supply, demand, and flow of Bismuth
http://minerals.usgs.gov/minerals/pubs/commodity/bismuth/

LANL: Bismuth
History, sources, properties, and uses.
http://periodic.lanl.gov/elements/83.html

It's Elemental: Bismuth
The Element Bismuth - Basic Physical and Historical Information
http://education.jlab.org/itselemental/ele083.html

Visual Elements: Bismuth
Source, uses, general and physical information, and key isotopes.
http://www.chemsoc.org/viselements/pages/bismuth.html

ChemicalElements.com: Bismuth
Basic information, atomic structure, and table of isotopes.
http://www.chemicalelements.com/elements/bi.html

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

ChemGlobe: Bismuth
The chemical element [Bi] - Bismuth - Datasheet
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/83.html

EnvironmentalChemistry.com: Bismuth
Comprehensive information for the element Bismuth – Bi is provided by this page including scores of properties, element names in many languages, most known nuclides and technical terms are linked to their definitions.
http://environmentalchemistry.com/yogi/periodic/Bi.html

Lenntech: Bismuth
chemical properties, health and environmental effects of bismut
http://www.lenntech.com/Periodic-chart-elements/Bi-en.htm

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