L'industrie italienne d'aviation – Italian Aviation Industry (1953)
That was in 1953.
Italy still had 14 aircraft and helicopter manufacturers! Today, there is only one...
Grouped into an association, the AIA (which still exists), they published annually a collection of all the aircraft and aeronautical equipment produced by this industry that was recovering from the destruction of the war.
142 pages that will surprise you: where you will see that in addition to four different aircraft, Macchi produced the Vampire under De Havilland licence (with Fiat), Agusta designed a twin-engine transport engine for 50 passengers, Fiat still produced propeller fighters, Marchetti produced a twin-engine transport for 10 passengers, there were five engine manufacturers, and seaplanes were still popular.
All the equipment manufacturers (many of whom have disappeared today) also find their place in this very interesting document for those interested in the history of European aeronautics in the post-war period.
A 143-page dossier in French.