The American Oil & Gas Historical Society is dedicated to preserving the history of U.S. oil and natural gas exploration and production.
The National Maritime Historical Society is a non-profit organization dedicated to America's seafaring heritage.
The Organ Historical Society promotes a widespread musical and historical interest in American organ building through collection, preservation, and publication of historical information, and through recordings and public concerts.
The National Society of The Colonial Dames of America is dedicated to furthering an appreciation of our national heritage through historic preservation, patriotic service, and educational projects.
The Titanic Historical Society maintains and promotes the history of HMS Titanic.