A report on the Braganza mine, the Glendale mine, the Orphan Boy mine, Summit County, Colorado / by Geo. J. Bancroft. 1916 July 10.

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A report on the Braganza mine, the Glendale mine, the Orphan Boy mine, Summit County, Colorado / by Geo. J. Bancroft. 1916 July 10.

10, 3 leaves ; 28 cm. + 3 maps and 2 assay reports.

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Bancroft, George R.

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