Grandma Bert and Grandpa Roy stayed on vacation at Fort Miles when it still was a Morale, Welfare and Recreation facility for the U.S. Army. Sadly, it closed in 1991 and the property was transferred to the state of Delaware to enlarge Henlopen State Park. They were there in 1989.
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Winterthur
The Dupont Estate. Some of these photos seem to have been taken elsewhere.