Frost, Kayla (November 12, 2012). "Painting the Painted Desert". Intelligent Travel: National Geographic. Archived from the original on November 15, 2012. Retrieved October 13, 2015.
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Frost, Kayla (November 12, 2012). "Painting the Painted Desert". Intelligent Travel: National Geographic. Archived from the original on November 15, 2012. Retrieved October 13, 2015.