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Register of the Schweitzer (Jeffrey) Collection, 1887-1983
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Collection Details
Table of contents What's This?
  • Descriptive Summary
  • Administrative Information
  • Access Points
  • Biography
  • Scope and Content

  • Descriptive Summary

    Title: Schweitzer (Jeffrey) Collection,
    Date (inclusive): 1887-1983
    Collection number: Mss174
    Creator: Duff Chapman
    Extent: 9 linear ft.
    Repository: University of the Pacific. Library. Holt-Atherton Department of Special Collections
    Stockton, CA 95211
    Shelf location: For current information on the location of these materials, please consult the library's online catalog.
    Language: English.

    Administrative Information


    Collection is open for research.

    Preferred Citation

    [Identification of item], Schweitzer (Jeffrey) Collection, Mss174, Holt-Atherton Department of Special Collections, University of the Pacific Library

    Access Points

    personal name

    Schweitzer, Jeffrey (1885-1979)
    Chapman, Duff
    Wilson, Ellen
    Sibbald, John

    corporate name

    Alma Mine (Amador County, Calif.)
    Amador King Mine (Amador County, Calif.)
    Argonaut Mine (Amador County, Calif.)
    Butte Mountain Mine (Amador County, Calif.)


    Calaveras County (Calif.) -History
    Amador County (Calif.) -History -1850-1950
    Amador County (Calif.) -History -1846-1850
    Mines and mineral resources -History -California
    Mining claims -California
    Mining districts -California
    Mining engineering
    Manganese mines and mining
    Copper mines and mining -California
    Platinum mines and mining
    Mercury mines and mining -California
    Gold mines and mining -Nevada
    Gold mines and mining -Arizona
    Gold mines and mining -California
    Mines and mineral resources -Nevada
    Mines and mineral resources -Arizona
    Mines and mineral resources -California


    Mining Engineer Jeffrey Schweitzer (1885-1979) graduated from the University of California School of Mines (1907). From 1908, he did free-lance work investigating mines and writing reports on them for various western mining companies. He was particularly well-informed about mining activities in Amador County, California. Most of the individuals with whom Schweitzer corresponded were active in the mining industry. Two of these men, John J. McSorley and James E. Davis, were associated with mines in Amador County. Schweitzer maintained friendships with McSorley and Davis for over fifty years. After he retired (1958) Schweitzer settled permanently in Jackson, Amador County. There, he became active in various local history projects. He oversaw the town of Jackson's acquisition of the Kennedy Mining & Milling Company Wheels as a city park. He was also the first Director of the Amador County Historical Society. During his last years, Schweitzer met amateur historian, Duff Chapman. Chapman was a long-time Amador County resident who wrote about the Jackson area. Jeffrey Schweitzer left his papers to Chapman, who, in turn, gave them--together with his own--to the University of the Pacific.

    Scope and Content

    The Jeffrey Schweitzer Collection contains papers, pamphlets, maps, photographs and books. With the exception of Series IV: Duff Chapman Papers, most of these materials relate to mines and mining practices in the first half of the twentieth century. Schweitzer's mining papers consist primarily of mining reports and brief letters to interested parties regarding the status of mining properties. For more than a decade he was Secretary of the South Jackson Mining Company, Amador County (1912-1925) and the affairs of this mining concern are amply represented in his papers. A complete listing of Schweitzer's books and maps is available on-site.