Mount Vernon Ladies' Association

The Mount Vernon Ladies' Association of the Union (MVLA) is a non-profit organization that preserves and maintains the Mount Vernon estate originally owned by the family of George Washington. The association was founded in 1853 by Ann Pamela Cunningham of South Carolina, and is the oldest national historic preservation organization as well as the oldest patriotic women's society, in the United States.

Source: Wikipedia — Mount Vernon Ladies' Association (CC BY-SA 4.0)