What is the name of the American inventor who was a notable visitor of the Grand Hotel in Michigan?
Grand Hotel (Mackinac Island): The Grand Hotel is a historic hotel and coastal resort on Mackinac Island, Michigan, a small island located at the eastern end of the Straits of Mackinac within Lake Huron between the state's Upper and Lower peninsulas. Grand Hotel (Mackinac Island):  The Grand Hotel is well known for a number of notable visitors, including five U.S. presidents, Russian presidents Vladimir Putin and Dmitri Medvedev, inventor Thomas Edison, and author Mark Twain.
i don't know