The aim of this article is to analyze a guild scarcely covered by studies that were focused on the world of work in Argentina during the 1920s to 1940s. We refer to the important sector of the printing industry of Buenos Aires and surrounding area. This work takes into account three fundamental axes. First, we analyze trade organization in order to describe unique industrial unions, their internal characteristics and the conflicts in which workers, employers and the state were involved. In second place, the role of different ideological tendencies of labor movement (anarchists, socialists, sindicalistas and communists). We explore then with the intention of measuring the influence of each one in the guild and conceptualizing their political and organizational strategies. Finally, we consider workplace organization. We are interested in examine a wide network of primary sources: business and State archives and newspapers of different unions and ideological tendencies.