I'm not absolutely sure who Parker was, or even if there was a Parker involved with this preparation. Other authors I've read all believe that this was one of David Hiscox's own preparations. He certainly was the Proprietor during the years the preparation was popular. I did find a reference to a Charles R. Parker in New York in 1867, who was in the Patent Medicine business. Unfortunately, he didn't list his products. I've found advertisements for the product from 1876 until 1912. Picture for bottle #4 courtesy of Michael Smith.
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