The primary purpose of the Olde Fort Mifflin Historical Society, Inc. is (a) to promote American military and social history centered on the events of Olde Fort Mifflin located on the site of Mud Island, (b) to establish a living museum to portray such military and social history, (c) to perpetuate the memory of the soldiers who defended the Fort during the American Revolution.

The mission of the Olde Fort Mifflin Historical Society is to: “Provide awareness of the defenses of the Delaware River and the City of Philadelphia through education and demonstrations.” This is done in several ways. First support of the volunteers that provide living history demonstrations from all military periods that the territory known as Fort Mifflin was served by. Providing lecturers and interpreters, for Living History Events, in the Tri-State Area. The Olde Fort Mifflin Historical Society is a non-profit educational organization.