A conservation easement on the mansion and 400 of the 476 acres is co-held by the Virginia Outdoors Foundation and the Virginia Department of Historic Resources.
The Virginia Department of Historic Resources gives recognition to the Cary Court shopping district for its major influence in Virginia's commercial development in the Twentieth Century.
In 1978, archaeologists led by Dr. Carter Hudgins and the Virginia Department of Historic Resources excavated the foundations of Robert Carter I's Georgian mansion at Corotoman.
In April 2010, a partnership between the Mount Vernon Archaeology Department, the Lighthouse Archaeological Maritime Program, the Institute of Maritime History, the Maryland Historical Trust, and the Virginia Department of Historic Resources conducted an archaeological survey of the Potomac River near Mount Vernon.
The site was excavated in 1973, by staff from the Virginia Department of Historic Resources.
A Virginia Historic Landmark is a location designated as a landmark by the Virginia Department of Historic Resources.
The Virginia Landmarks Register is maintained by the Virginia Department of Historic Resources.
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