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Subject Metallurgy Remove constraint Subject: Metallurgy

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    • 1995-Mar-22

    Harold J. Read describes his family background and his upbringing in Illinois, where he also earned his BS and MA from the University of Illinois but Read later relocated to the University of Pennsylvania where his…

    • after 1849 – before 1887

    Tabulation of data on the fineness of copper (i.e. weight of copper in proportion to the total weight of the metal including impurities and alloy base metals.)

    • after 1860 – before 1887

    Account Statement listing totals for standard ounces of gold melted, actual wastage, and ratio of wasted to melted for the years 1861-1886.

    • after 1860 – before 1887

    Account Statement listing totals for standard ounces of gold melted, actual wastage, and ratio of wasted to melted for the years 1861-1886.

    • 1885-Oct-16

    Notes on the costs for cleaning and pickling cents with aqua fortis (nitric acid).

    • 1879-Jun-10

    Rough draft of a letter dealing with the results of Outerbridge’s experiments on the volatilization of standard silver. Letter is unsigned but is written in Booth's hand.

    • 1879-May-29

    Booth's comments on the experiments made by A.E. Outerbridge on volatilization of silver of standard fineness.

    • circa 1900

    Portrait of William Francis Hillebrand (1853-1925). Hillebrand was born in Honolulu, Hawaii on December 12, 1853, the son of renowned botanist William Hillebrand (1821-1886). William Francis Hillebrand studied at…