Rare Books
The Laporte gold gravel mines, limited, Plumas county, California : Report ... Estimate of profits
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Report on the "Alturas Mining Company's" gravel and tailing gold mine situated in Slate Creek basin, Sierra and Plumas counties, California
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Report on the Green Mountain Gold Mine, Plumas County, California, February, 1880
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(200) Plumas-Eureka Mine, Plumas County, California
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
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Reports on the Todd Valley Ditch Company, Roush gravel claims, and Breece and Wheeler gravel claims, Placer Co., California
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Reports and estimates on the Pittsburg mine and mining property, Nevada county, California
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