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Subject
- Booth, James Curtis, 1810-1888728
- Mint of the United States305
- United States Mint305
- Morfit, Campbell, 1820-1897100
- United States. Department of the Treasury74
- Nurseries (Horticulture)61
- United States. Assay Office, New York City59
- Chemists50
- Chemistry teachers48
- Thomas, Joseph W.46
- Guthrie, James, 1792-186944
- Metals--Refining43
- Snowden, Archibald Loudon, 1835-191222
- Assaying19
- Real property19
- Metallurgy18
- Smelting18
- Wöhler, Friedrich, 1800-188217
- Geological surveys15
- Alloys13