- EnvironmentalChemistry.com: Americium
 - Includes overview, name in other languages, atomic structure, chemical properties, physical properties, and health information. - WebElements: Americium
- Includes information on abudance, uses, isotopes, history, and much more.
- Wikipedia: Americium
- Hyperlinked overview of the element with notable characteristics, applications, history, isotopes, and references.
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