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Newton Mining Company was based in Inyo County, California, and owned by H. M. Yerington. The mine was closed down in 1893 because of the low price paid for silver and lead ore. Included are correspondence, assay reports, financial records, bills, payrolls, receipts, ore shipment records, bank books, check book, and map of the Mineral zone from the Union Mine northward, 1889. Correspondence includes a letterpress copy book, 1890-1907 from Yerington; many of the loose letters are to Yerington...
- Subject: Inyo County (Calif.)
- Subject: Union Mine (Inyo County, Calif.)