"The recent finds include articles which have never been known as native to this country, and doubtless they had their origin in the orient. War weapons, copper instruments, sharp-edged and hard as steel, indicate the high state of civilization reached by these strange people."  "In the opposite corner of this cross-hall were found tools of all descriptions, made of copper." - Arizona Gazette front page article  Explorations in the Grand Canyon April 5, 1909