'By airship to the North Pole', McClure's
Tags: 1900s; 1907; 1907-6-1; Earth Sciences; Geography
'The origin of our moon', Harpers
Tags: 1900s; 1907; 1907-6-1; Astronomy and Astrophysics; Earth; Lunar craters; Moon; Origin; Physics; Pickering, William H. (William Henry); Surface
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