Six coloured cards, La Navigazione Aerea: Vero estratto di carne Liebig. Spiegazione a Tergo. Issued free with jars of Liebig's meat extract. [c1910]. Each 7x11cm. Illustrative of early aviation; historical notes on reverse covering years 1907-09. Including biplanes, airships; no.5, Ville de Paris; no.6 Zeppelin scene also has hangars and airship apparatus. Together in frame 64.5x26x2cm La Navigazione Aerea 1909-1910