william henry jackson, 1869. a study among the rocks of echo...

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William Henry Jackson, 1869. A study among the rocks of Echo Canyon. (United States Geological Survey.)

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  • William Henry Jackson, 1869. A study among the rocks of Echo Canyon. (United States Geological Survey.)

  • Gordon Bushaw for the Rephotographic Survey Project, 1978. Rocks, Echo Canyon, Utah.

  • Kyle Bajakian and Toshi Ueshina for the Third View Project, 1997. Rocks, Echo Canyon, Utah.