Stephen S. Hall, "Nasca: Spirits In The Sand," National Geographic (March 2010).

  David Zax, "Ancient Citadel," Smithsonian (May 2008).

  A.R. Williams, "Pyramid Of Death," National Geographic (October 2006).

  A.R. Williams, "Mystery Of The Tattooed Mummy," National Geographic (June 2006).

"First City In The New World?," Smithsonian (August 2002).