This image shows the view of the Atlantic from Ocean Drive near the town of Mt. Desert Island, Maine.
The description states:
View from scenic turnout on Ocean Drive, Mt. Desert Island, Maine.
–Mt. Desert Island is the largest island off the coast of Maine, and is the 6th largest island in the contiguous United States (which excludes the large Hawaiian Islands and Alaskan Islands).
This card was used and is dated 24 September 1963, which is consistent with the cars visible in the photo.