Michigan’s Colonial Michilimackinac on Mackinac Island is a preserved fur-trading village representing 1770s life. There is much to see, including demonstrations of open hearth cooking.
Navarre-Anderson Trading Post is another 1700s fur-trading post museum which contains the oldest surviving wooden residential building in Michigan — and an 1810 cookhouse!
Historic London Town and Gardens in Edgewater, Maryland offers hearth cooking and other interesting classes.
See the photo online of the 1700s open-hearth kitchen at Ponoma Hall in Camden, New Jersey, and the 1715 Griffth Morgan House kitchen in Pennsauken, New Jersey.