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| Figure 4. Gold from the Grit mine, El Dorado County, California: the same specimen as no. 61 on Plate I of the Dohrmann catalogue. It was purchased at the Dohrmann auction in 1886 by Georges de la Bouglise. When the Bouglise collection was auctioned in Paris in 1911 it was purchased by Albert C. Burrage of Boston, and was later bequeathed to Harvard. |