Curium

ChemGlobe: Curium
Electronic, thermal, and steric data along with an isotope table.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/96.html

ChemicalElements.com: Curium
Basic information, atomic structure, and isotopes.
http://www.chemicalelements.com/elements/cm.html

Curium
History and properties of the element, its isotopes, its spectrum, and its substances.
http://nautilus.fis.uc.pt/st2.5/scenes-e/elem/e09600.html

EnvironmentalChemistry.com: Curium
Atomic structure, chemical and physical properties, and table of nuclides.
http://environmentalchemistry.com/yogi/periodic/Cm.html

It's Elemental: Curium
Basic physical and historical information.
http://education.jlab.org/itselemental/ele096.html

LANL: Curium
Basic information and history.
http://periodic.lanl.gov/elements/96.html

Lenntech: Curium
Physical data, chemical properties, health and environmental effects.
http://www.lenntech.com/Periodic-chart-elements/Cm-en.htm

Visual Elements: Curium
General and physical information, source, and key isotopes.
http://www.chemsoc.org/viselements/pages/curium.html

WebElements: Curium
Extensive information on history, compounds, and properties.
http://www.webelements.com/webelements/elements/text/Cm/key.html