The Ojibwas ceded the island to the U.S. in the 1842 Treaty of La Pointe, with the Grand Portage Band unaware that neither they nor Isle Royale were in British territory.
Os Ojibwas cederon a illa aos Estados Unidos no Tratado de la Pointe de 1842, coa Banda de Grand Portage sen saber que nin eles nin Isle Royale estaban en territorio británico.