Tabulation of data reporting the number of ounces of pure silver in disks of different diameters and of one inch thickness. Dated 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.) Dated after 1849, before 1887.
James Curtis Booth (1810-1888) comments on the subject of silver containing selenium. Letter relates to a set of correspondence from the New York Assay Office. Dated after 1849, before 1887.
Letter marked "confidential" discussing business of the United States Mint. Richard S. McCulloh (1818-1894) studied chemistry in Philadelphia with James Curtis Booth (1810-1888) from 1838 to 1839. From 1846 to 1849 he worked for the U.S. Mint in Philadelphia.
U.S. National Archives (Record Group 104, Entry 216, Letters Received from Branch Mints and Assay Offices, 1834-1873)
Descrição:
National Archives, record group 104 (U.S. Mint), entry 216, volume 8, covering the period January 8, 1849 to June 30, 1852. Courtesy of Roger W. Burdette.
