Gold Bulletin - The peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, reviews, conference reports, and highlights of patents and scientific literature. - http://www.goldbulletin.org
ChemGlobe: Gold - Electronic, thermal, and steric data along with an isotope table. - http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/79.html
Lenntech: Gold - Physical data, chemical properties, health and environmental effects. - http://www.lenntech.com/Periodic-chart-elements/Au-en.htm
EnvironmentalChemistry.com: Gold - Atomic structure, chemical and physical properties, and table of nuclides. - http://environmentalchemistry.com/yogi/periodic/Au.html
Visual Elements: Gold - Image, general and physical information, source, uses, key isotopes, and ionisation energies. - http://www.chemsoc.org/viselements/pages/gold.html
USGS Minerals Information: Gold - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). - http://minerals.usgs.gov/minerals/pubs/commodity/gold/
ChemicalElements.com: Gold - Basic information, atomic structure, and table of isotopes. - http://www.chemicalelements.com/elements/au.html
Radiochemistry of Gold - Full text of the monograph by J. F. Emery (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF] - http://lib-www.lanl.gov/cgi-bin/getfile?rc000062.pdf