Postcards, which were travelled or not, of aviation, from those dedicated to balloons, captive or not, to postcards that were airmail precursors, dedicated to aviation events or competitions, up to those depicting the great Transatlantic Cruises of Italo Balbo and their anniversaries. Followed by airplanes, Zeppelins and airships in general.
Postcards of all kinds, with the common feature of describing and witnessing the world of aviation.