Volume #20 of 20 in The North American Indian series contains detailed information on The Alaskan Eskimo, The Nunivak Eskimo of Hooper Bay, Eskimo of King island, Eskimo of Little Diomede island, Eskimo of Cape Prince of Wales, The Kotzebue Eskimo, The Noatak, The Kobuk, The Selawik. The subject areas covered on each tribe are histories, customs, ceremonies, mythologies and comparative vocabularies.