The exhibition of the Ministry of Communications, curated by Baldacci and La Civita, was one of the most comprehensive. It consisted largely of memorabilia conserved at the Museo Telegrafico di Roma [Telegraphic Museum of Rome], managed by the Ministry itself. In the two larger of the four rooms assigned to it, two different exhibits were displayed: one historic, the other modern. The historic display was ideally consecrated to Alessandro Volta; starting from him, it went on to represent the evolution of systems of communication up to Marconi. The second room, that of the modern systems, was instead dedicated to Giovanni Caselli, and displayed the equipment in use at the national radiotelegraphic stations.