Gene Wallen brought this unique building to my attention and sent me some photos he took while visiting it recently.
There is a Michigan Historical Marker at the Pickle Barrel House location that reads:
The Pioneer Cooperage Company of Chicago designed this small vacation cottage, which stood on the shores of nearby Sable Lake from 1926 until about 1937. It was built for William Donahey, creator of the Chicago Tribune cartoon story The Teenie Weenies. The house was constructed as a typical barrel would have been, only on a much larger scale. The main barrel contained a living area on the first floor and a bedroom on the second. A pantry connected this barrel to a smaller single-story one, which housed a kitchen.
Donahey spent ten summers at the cottage with his wife, Mary, herself a noted author of children’s books. The structure was then moved to its current site and used as a tourist information center. The Pickle Barrel House is listed in the National Register of Historic Places.