Past curators of the Mary Ball Washington Museum include Thomas M. Thacker II, Cathy Currey, Sarah J. Walker, and Sonja Headley.

The Library has an extensive collection of books and genealogical research material dating back to 1651, covering some 350 years of history in Lancaster County in particular and the Northern Neck in general, as well as Middlesex and Essex counties.

It contains approximately 10,000 books, periodicals and manuscripts concerning Virginia and the Northern Neck, as well as research material on adjoining states.

The Museum seeks to recapture the stories and the rich history of the people of The Northern Neck.

The museum and library are open to the public, who may tour the historic buildings, view exhibits, participate in educational programs and trace family histories.