Lovejoy apparently got much of the information for his 1946 article from Frederick Rudolf Brown (1882-1952), a great grandson of Robert Ball Hughes.
More information about this article is available at E-Museum of Pyrographic Art The Antique Hall Ball Hughes Salon No. 13.
This same issue of this magazine has the article Some American Cameo Portraitists by Gertrude S. Cole that mentions Ball Hughes.
last update 6/30/2013
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