For information on tax credits:
http://www.hpo.dcr.state.nc.us

For general information on renovation:
http://www.oldhousejournal.com

http://oldhouseweb.com

http://www.preservationdirectory.com

http://www.houseofantiquehardware.com

http://www.hud.gov/offices/lead

The following contains historic sites in North Carolina.  My thanks to Kelly Cunningham for providing these.

http://www.ah.dcr.state.nc.us/sections/hs/sites.htm

http://www.fortdefiancenc.org/

http://www.historicrosedale.org

http://www.charlottemuseum.org

http://www.oldsalem.org

http://www.lattaplantation.org

http://www.kornersfolly.org/index.htm

The link below contains North Carolina historic maps and images.

http:/www.waywelivednc.com

For those interested in obtaining salvage materials for historic properties, the following list should be helpful.  My thanks to David Stewart for obtaining this information for me.

Architectural Salvage of Greensboro - http://www.blandwood.org/archsalvage.html