Information on plaque from: http://www.chemheritage.org/pubs/ch-articles/v23n1-priestley3.html; Engraving after a late 18th century plaque manufactured by Josiah Wedgwood. For a photographic reproduction of the original plaque, see P/P933a S. Caption below image: Died in North America. Feb.6-1804, aged, 71.; Print
Collection:
Edgar Fahs Smith Image Collection (University of Pennsylvania)
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