As regards his historiographical works, the author has examined a great deal of documents in the notarial, churches, dioceses, and private archives in the province of Trapani and Palermo, in addition to those of National character in Milan, Rome, Mantua, Turin and Naples [REF].
Besides, two of his works, Alcamo e Garibaldi, and Calatafimi e Garibaldi are present in Italian and International bibliographies.