[2-iii] Obermaier, Hugo. Der Mensch der Vorzeit. Berlin, no date, p. 238 f.
[3-iii] Bogoras, Waldemar. The Chukchee—Material Culture, Memoirs, American Museum of Natural History, vol. 11, part 1, Leiden and New York, 1904, p. 7, et seq.
[4-iii] Radloff, Wilhelm. Aus Sibirien, vol. 1, p. 444 f.
[5-iii] Laufer, Berthold. Journal of Race Development, vol. 5, pp. 167-170.
[6-iii] Morice, A. G. The Canadian Dénés, Annual Archæological Report, 1905, Appendix, Report, Minister of Education, Toronto, 1906, pp. 187-219, 197 f.
[7-iii] Boas, Franz. The Eskimo of Baffin Land and Hudson Bay, Bulletin, American Museum of Natural History, vol. 17, 1907, pp. 75, 357.
[8-iii] Forrer, Robert. Urgeschichte des Europäers von der Menschwerdung zum Anbruch der Geschichte, Stuttgart, 1908, p. 197.
[9-iii] Boas, Franz. Mind of Primitive Man, p. 162. Bogoras, The Chukchee, p. 177.
[10-iii] Rivers, W. H. R. The Disappearance of Useful Arts, Festskrift tillägnad Edvard Westermarck, 1912, pp. 109-130.