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  • All fields: sulphides
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    • Eldora, Colorado 1900

    • Several buildings stand along dirt roads, probably including Eldorado Avenue, in Eldora, a mining town in Boulder County, Colorado. The town experienced its mining boom for about two years starting in 1897, when gold tellurides and sulphides were...
    • Boulder County (Colo.)--1890-1900.; Eldora (Colo.)--1890-1900.; Buildings--Colorado--Eldora--1890-1900.; Streets--Colorado--Eldora--1890-1900.
    • [between 1935 and 1950?]
    • Eldora Valley

    • The snow-capped peaks of the Continental Divide stand in the distance of this view of Eldora in Boulder County, Colorado. Eldora experienced its mining boom for about two years starting in 1897, when gold tellurides and sulphides were discovered on...
    • Boulder County (Colo.)--1930-1950.; Eldora (Colo.)--1930-1950.; Gold mining--Colorado--Eldora--1930-1950.; Mountains--Colorado--1930-1950.
    • [between 1935 and 1950?]
    • History of Denver

    • Comprehenisve study of the history of the Denver area before, during, and after the founding of the city.
    • Cities and towns--Colorado--Denver.
    • 1901

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