Friedrich Rehberg in Bryan's "Bryan's dictionary of painters and engravers" (New York : Macmillan, 1903) p. 206.
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The full title of this work was, "Drawings faithfully copied from Nature at Naples and, with permission, dedicated to the Right Honorable Sir William Hamilton, his Brittanic Majesty's Envoy Extraordinary and plenipotentiary at the court of Naples" (1794).
