Slide Mining Company 1893 Ouray, Colorado – Signed by Maryland Governor
Mining Companies beginning with the letters S – Z – Beautifully engraved Certificate from the Slide Mining Company issued
in 1893. This historic document was printed by the American Banknote Company and has an
ornate border around it with the company’s name on top. This item is hand signed by by the company’s president, A. F. Horner and is
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