National Park Service - http://www.cr.nps.gov/
National Trust for Historic Preservation - http://www.nationaltrust.org/
Preservation Magazine OnLine - http://nationaltrust.org/magazine
Advisory Council on Historic Preservation - http://www.achp.gov/
South Carolina Historic Preservation Office - http://shpo.sc.gov
Topozone [for US Geological Survey Maps and Universal Transverse Mercator] - http://www.topozone.com/
What You Need To Know About Architecture - http://www.architecture.about.com/
Charlotte-Mecklenburg Historic Landmarks Commission - http://www.cmhpf.org/
The Association for Preservation Technology International - http://www.apti.org/
Conservation OnLine (CoOL) – http://cool.conservation-us.org
Preservation Directory.com – http://www.preservationdirectory.com/HistoricalPreservation/Home.aspx
Archaeological Institute of America – http://www.archaeological.org
North Carolina State Historic Preservation Office – http://www.hpo.ncdcr.gov/
Preserve Net – http://www.preservenet.cornell.edu
National Register of Historic Places – http://www.nps.gov/history/nr
The American Institute of Architects – http://www.aia.org/index.htm
American Institute for Conservation of Historic Works and Artistic Works – http://www.conservation-us.org