Design patent 98,617 on February 18, 1936

From wikipedia on "wigwam" motel design: Frank A. Redford applied for a patent on the ornamental design of the building on December 17, 1935, and was granted design patent 98,617 on February 18, 1936. The original drawing includes the swastika, at the time a symbol associated with native Americans or often worn as a good-luck charm.