"Isle Royale." YourDictionary, n.d. Web. 23 September 2018. <http://www.yourdictionary.com/isle-royale>.
Isle Royale. (n.d.). Retrieved September 23rd, 2018, from http://www.yourdictionary.com/isle-royale
An island of northern Michigan in Lake Superior near the coast of Ontario. French fur traders named the island in 1671. Native Americans mined the island's copper for centuries before ceding the island to the United States in 1843. It is now a national park.