The Minnette C. Duffy Award is the state's highest award for preservation, restoration, or maintenance of grounds related to historic structures. The Richmond County Historical Society for the Wall Garden received the 1999 award for restoration of the garden. The Wall Garden is on the east side of the Leak-Wall House, which was built in Rockingham in 1853. The garden was designed and built by E.S. Draper in 1918, on a commission by Mrs. H.C. Wall to honor her son and his new bride.