Manuscripts
Organ Rock
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Jacobs Monument. An outlier of the Organ Rock tongue of the Cutler formation, 253 ft. high. Copper Canyon. In Sec. 27 T. 42S., R 13E
Manuscripts
mssMarston papers V125/0126
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a. Organ Rock Anticline
Manuscripts
The collection contains letters, documents, including 190,000 reports, 1200 maps, 500 photographs, and 8200 pieces of printed material related to the life and career of Ralph Arnold. Subjects represented in the collection include: mining, petroleum, and seismology in the Western United States as well as Canada, Mexico, Cuba, and South America; political papers from 1914 to 1956, mostly concerning the campaign of Herbert Hoover for president; family and personal papers from 1836 to 1961 of Arnold and his father, Delos Arnold, containing source material on Pasadena and Southern California local history. The collection also contains Arnold's field books, including those made at Stanford University with the U.S. Geological Survey from 1900 to 1909.
mssArnold
