USA Curling
Otherwise known as the United States Curling Association, this is the association that governs curling in The United States.
https://www.teamusa.org/USA-Curling

Grand National Curling Club
Regional association that governs curling clubs along the East Coast, including Triangle Curling Club
https://www.gncc.org/ 

World Curling Federation
Association governing curling worldwide
http://www.worldcurling.org/

Curling Canada
Association that governs curling in Canada
https://www.curling.ca/

CurlingZone
Curling news, live scores, team rosters & information, blogs, and more
http://www.curlingzone.com/