<a href="//commons.wikimedia.org/wiki/Giovanni_Crupi" class="mw-redirect" title="Giovanni Crupi">Giovanni Crupi</a> (1849-1925), "<a href="//commons.wikimedia.org/wiki/Taormina" title="Taormina">Taormina</a> - Corso Umberto" (the main street). Catalogue # 56.
<a href="//commons.wikimedia.org/wiki/Giovanni_Crupi" class="mw-redirect" title="Giovanni Crupi">Giovanni Crupi</a>
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Project Gutenberg Literary Archive Foundation: <a rel="nofollow" class="external text" href="http://www.gutenberg.org/etext/17121">De Aarde en haar Volken, Jaargang 1906</a>. HAARLEM, H. D. TJEENK WILLINK &amp; ZOON.