This image is an aerial view of the settlement of Gills Rock, Wisconsin, located at the extreme northern end of the Door County peninsula.
Color Photography. by Hagedorn Studio, Sister Bay, Wisc.
The description states:
Aerial View of GILLS ROCK,
DOOR COUNTY, WISCONSIN
Washington Island Ferry shown coming into dock.
–The ferry is likely the same one as in the posting from earlier this week. To date, Gills Rock is not an incorporated town or city.
This card likely dates from the 1950s.