I have been a member of the Southeast Louisiana Branch of the National League of American Pen women for almost 20 years . The members incude writers, musicians, and artists. The headquarters is in Washington D.C., close to the Smithsonian. It is an old organization which dates back to 1897.
I encourage you to check out the webpage http://www.nlapw.org/
A new website has been designed on youtube showcasing some of its members and a piece of their work. They happened to use me as their "cover girl" for the youtube. Don't ask me why.