Titanium

WebElements: Titanium - Extensive information on history, uses, occurrence, compounds, and properties of the element.
http://www.webelements.com/webelements/elements/text/Ti/key.html

ChemicalElements.com: Titanium - Basic information, atomic structure, and isotopes.
http://www.chemicalelements.com/elements/ti.html

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

Visual Elements: Titanium - Image, general and physical information, source, uses, key isotopes, and ionisation energies.
http://www.chemsoc.org/viselements/pages/titanium.html

ChemGlobe: Titanium - Electronic, thermal, and steric data along with an isotope table.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/22.html

LANL: Titanium - History, sources, uses, and properties.
http://periodic.lanl.gov/elements/22.html

It's Elemental: Titanium - Basic physical and historical information.
http://education.jlab.org/itselemental/ele022.html

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

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

USGS Minerals Information: Titanium - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
http://minerals.usgs.gov/minerals/pubs/commodity/titanium/

Radiochemistry of Titanium - Full text of the monograph by Vincent J. Landis (San Diego State University, San Diego, California). [PDF] <small>(January, 1971)</small>
http://library.lanl.gov/cgi-bin/getfile?rc000042.pdf