Della Gatta often repeated popular views and costume studies like these. Another version of Dell' Aquila, for example, which is signed and dated 'Gatta P. 1783' was sold at Christie's, London, 18 April 1989, lot 54. The drawing called Delle colline di Posilipo seems to have been inspired by a drawing of the same composition by Pietro Fabris (fl. 1754-1804) (M.C. Masdea and A. Caròla-Perrotti, in Napoli-Firenze e Ritorno: Costumi popolari del Regno di Napoli: nelle Collezioni Borboniche e Lorenesi, exhib. cat., Florence, Palazzo Pitti, 1991, p. 70, ill, p. 195).