Drystone Walling Association www.dswa.org.uk
		The Stone Foundation www.stonefoundation.org
		Black Mountain Center for the Arts www.blackmountainarts.org
		Sandstone Works Company www.sandstoneworks.com
		Trow and Holden Stone Cutting Tools www.trowandholden.com
		Penland School of Crafts www.penland.org
		HandMade: The Western North Carolina Craft, Architecture and Design Expo designexpo.handmadeinamerica.org