Top of Vesuvius; Representation of the tip of Vesuvius on different days in the period from July 8 to October 29; 1767; copperplate engraving; hand-colored; plate 2; Fabris; Pietro; 1776; William Hamilton: Campi Phlegraei. Observations on the Volcanos of the two Sicilies. As they have been communicated to the Royal Society of London = Observations sur les volcans des deux Siciles (...). Naples: [s.n.]; 1776