Digital libraries provide an easy and convenient source of data for journalistic academic research. In this paper, the author answers the question of whether the most well-known socio-political Polish press titles published between 1918 and 1939 are available online and to what extent they are fully digitised and accessible in digital libraries. Through media content analysis and the press content analysis methods of Walery Pisarek, all the digital resources available for an ordinary Internet user were browsed. The main role of the analysis was to establish which journals and periodicals were published weekly and as daily newspapers. Also, the nature and political leanings of press publications were taken into consideration (each press title was usually associated with a particular party). At the same time, the texts were profiled as regional, national, Catholic, etc. Finally, an attempt to develop a typology of the given titles is made.