ChemGlobe: Dysprosium
   Electronic, thermal, and steric data along with an isotope table.
   http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/66.html

ChemicalElements.com: Dysprosium
   Basic information, atomic structure, and isotopes table.
   http://www.chemicalelements.com/elements/dy.html

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

It's Elemental: Dysprosium
   Basic physical and historical information.
   http://education.jlab.org/itselemental/ele066.html

LANL: Dysprosium
   History, properties, uses, and cost.
   http://periodic.lanl.gov/elements/66.html

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

Visual Elements: Dysprosium
   Image, source, uses, physical information, and key isotopes.
   http://www.chemsoc.org/viselements/pages/dysprosium.html

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