EN
The article presents the results of historical and bibliological research, which objective is to reconstruct the history of the Ignis publishing society established by the Polish Socialist Party (PPS). The rfist part of the study presents the history of the publishing house reconstructed on the basis of scientific studies, memoirs, and archival materials, as well as the compactness of the bookselling and socio-cultural press in the interwar period. The second part contains the results of quantitative and qualitative (structural) analysis of the publishing repertoire. This study is the first in a series devoted to the activities of the PPS publishing house.