1913: The Scientific Side of the Assay Office at New York - Buying and Selling Silver and Gold
I was just researching the unique gold U.S. Mint medal for the 1904 Louisiana Purchase Expo and came across this interesting article by H.J. Slaker, employee of the Assay Office and at the Mint Exhibit.
It looks like H. J. Slaker may be Harrison Joseph Slaker of The Cove, Ossining, Westchester, New York (links in above thread).
This article is from the Scientific American in 1913:
Buying and Selling Silver and Gold: The Scientific Side of the Assay Office at New York
- https://nnp.wustl.edu/library/book/625056 (update)
Update: images updated from NNP, originally from JSTOR.