Kaibab National Forest (Arizona, United States)

Scope and Contents Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton, thanking him for his articles on weathering and postulating that the Grand Canyon was formed in this manner, and that he is preparing a section concerning this for Geikie's manual. He recommends William Henry Holmes' topographical drawings of the Grand Canyon and reports that photolithographs are being prepared. He gives details of the depths of the individual geological stratifications which can be observed at the Grand Canyon....

Scope and Contents Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton enclosing copies of topographical drawings of the Grand Canyon by William Henry Holmes. He pontificates over what text he will eventually send to accompany the drawings and asserts that the Grand Canyon was formed during the Pliocene and the Quaternary geological periods rather than by erosion during the Tertiary period. He promises to forward copies of Holmes' drawings of the Kaibab region shortly. He reports that John W Powell...