Cf. Steward, J.H. and Métraux, A., Tribes of the Peruvian and Ecuadorian Montana in Handbook of the South American Indians, Washington D.C., 1948, Vol.3, bulletin 143, Pl.50, for a photograph of a man wearing a similar hat attributed to the Campa. The author states that such headdresses are worn throughout a large area in Ecuador and Peru