Bismuth: Data tables and historic information.
ChemGlobe: Bismuth: Electronic, thermal, and steric data along with an isotope table.
ChemicalElements.com: Bismuth: Basic information, atomic structure, and table of isotopes.
EnvironmentalChemistry.com: Bismuth: Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental: Bismuth: Basic physical and historical information.
LANL: Bismuth: History, sources, properties, and uses.
Lenntech: Bismuth: Physical data, chemical properties, health and environmental effects.
Radiochemistry of Bismuth: Full text of the monograph by Kashinath S. Bhatki (Tata Institute of Fundamental Research, Bombay India and Bhabha Atomic Research Centre, Trombay, Bombay, India). [PDF]
USGS Minerals Information: Bismuth: Statistics and information on the worldwide supply, demand, and flow of Bismuth. [PDF]
Visual Elements: Bismuth: Source, uses, general and physical information, and key isotopes.
WebElements: Bismuth: Extensive information on history, uses, occurrence, compounds, and properties.
Wikipedia: Bismuth: Properties of the element, including its history, applications, and characteristics.