International Dark-Sky Association (IDA):  http://www.darksky.org/

Dark Sky Virginia (VA chapter of IDA): http://www.darkvirginiasky.org/

Saving Dark Skies in Rappahannock County:  http://www.savingdarkskies.com/

Dark Skies of Rappahannock Facebook:  https://www.facebook.com/DarkSkyRappahannock/

Solar United Neighbors of Virginia:  http://www.solarunitedneighbors.org/virginia/

Piedmont Environmental Council (PEC): https://www.pecva.org/

Virginia Conservation Network (VCN): http://www.vcnva.org/

Blue Ridge PRISM: http://blueridgeprism.org/