This article is a contribution to the history of underground Polish press in 1939–1945. It is concerned with the main problems discussed in the periodical Jutro Polski. Biuletyn Informacyjny [ Poland’s Tomorrow: Information Bulletin] issued by the Democratic Party — The Rectangle. Published two-three times a week over the period 1940–1942, it informed its readers about the situation at the battle fronts, the latest in international politics and current events in Poland; it also featured articles debating the problem of Poland’s post-war political system.