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Letter From W. W. Crosby, Superintendent, Grand Canyon National Park, to the Director, U.S. National Park Service

ContributorsCrosby, W. W. (Author)
Created1923-08-21
Description

Letter from W. W. Crosby to the Director of the National Park Service defending his placement of the dynamite near Grand Canyon Village. He states there is between 16-20 tons of dynamite.

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Archean Ripple Marks in the Grand Canyon

ContributorsMaxon, John H. (Author) / Campbell, Ian (Author) / American Journal of Science (Publisher)
Created1934-10-01
DescriptionExcerpt on the Archean Ripple Mark in the Grand Canyon.