Focusing on the Marcel Proust's novel A la recherche du temps perdu (published between 1913 and 1927), the discussion presented here analyze some of the relationships that were established between literature, press and editorial market in France of the Third Republic, specifically in Paris in the 1910s and 1920s. Through reality fragments of print culture, which was a striking fact of this situation, the central intention here is to understand how the emergent mediatic culture served of the spread and success of modernist literature, as in the Proustian work. Therefore, one of the central points of this reflection is to understand the role of the new cultural intermediary who then set up through the printed and bookish market, and that marked a fundamental way the history of literary modernism. [ABSTRACT FROM AUTHOR]