Prospecting and mining for opal along the Snake River in southwest Idaho during the eighteen nineties : a brief history of Idaho's opal industry in Owyhee County and a sketch of the early-day mining camp of Opaline
"Prospecting and mining for opal along the Snake River in southwest Idaho during the eighteen nineties : a brief history of Idaho's opal industry in Owyhee County and a sketch of the early-day mining camp of Opaline"
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