Edith and Theodore Roosevelt Pine Knot Foundation

To restore, preserve, protect the historic cottage, enhance the wilderness aspects of its 90+ acres, provide visitation, interpretation, education & facilities for, the historic "Pine Knot" site (VA and Federal historic landmark) and family retreat of President Theodore Roosevelt and his wife Edith during his presidency.

• History Museums

• 1739.

The US Military Hall of Fame Inc.

Our mission is to bring to surface the men and women of our Military who have been honored for their duties and properly recognize them into the general public.

• History Museums

• 1740.

TUDOR PLACE FOUNDATION INC

Tudor Place Foundation operates an historic property located in the heart of Washington's Georgetown area.

• Music

• 1741.

Gabriel Music Society

Gabriel Music Society is a non-profit organization dedicated to preserving the Gabriel family musical and cultural legacy that dates back to 1850's New Orleans, and to promote music education and performance for local youth.

• Historical Societies and Related Activities

• 1742.

Daughters of American Revolution District of Columbia State Society

The objectives of the National Society Daughters of the American Revolution are historic preservation, promotion of education and patriotic endeavor.

• History Museums

• 1743.

Weaver Castle Museum Inc

Education of the Civil War and Civil Rights Movement and preservation of historic buildings.

• History Museums

• 1744.

Dakota County Historical Society, Inc. Dakota Museum

Collect, Preserve, Promote & Present the History of Dakota County .

• History Museums

• 1745.

The American Civil War Center at Historic Tredegar

The mission of The American Civil War Museum is to be the preeminent center for the exploration of the American Civil War and its legacies from multiple perspectives: Union and Confederate, enslaved and free African Americans, soldiers and civilians.

• Engineering and Technology Research, Services

• 1746.

Panama Canal Museum, Inc.

The Mission of the Panama Canal Museum is to document, interpret and articulate the role of the United States in the history of Panama, with emphasis on the construction, operation, maintenance and defense of the Panama Canal and the contributions to its success by people of all nationalities.