These are just a few of my favorite links and will be expanding over time. If you know of worthy sites please let me know.

www.italianartstore.com Great online art supply store, who carry most all of our colors.
American Impressionist Society
Plein-Air Painters of the Southeast
International Plein Air Painters
Maryland Society of Portrait Painters
Henry Hensche Foundation
Women Painters of the Southeast
Plein Air Artists Colorado
www.tadspurgeon.com
www.wetcanvas.com
www.rationalpainting.org