The land has come Into its own. At last it has become the focus of great national problems which until now were evoked most frequently with regard to and for the benefit of cities, or even of metropolitan areas. Its very representation, until very recent ages held to be terribly abstract and reserved to technicians, today belongs to the public domain. Exhibitions bearing titles such as Maps and Illustrations of the Earth (Paris, 1980) or Landscape: Image and Reality (Bologna, 1981) attract as many visitors as an Impressionist retrospective, not only because of the novelty of the theme, the rarity of certain documents or the beauty of most of them, as proven by the success of even more specialized events such as those dedicated to the 1730 Sardinian cadastre in Savoy or to the one of Maria-Theresa in Lombardy (Chambéry and Pavia, 1980).