Other
Copper Development Association: Copper in the Usa: Bright Future Glorious Past
This page describes the history of copper use in the United States and the future of copper in industry. Contains a good overview of copper use in the U.S.
Web Elements
Web Elements Periodic Table: Copper
This page gives useful numerical and qualitative information about copper, chemical symbol Cu. Includes videos of certain reactions, electronic configuration, and information about the isolation of copper metal.