Kreis Birnbaum

Kreis Birnbaum () was a district in Prussia (''Kreis'') in the west of the Grand Duchy of Posen and the succeeding Province of Posen, as part of ''Regierungsbezirk'' Posen between 1815 and 1920. Today the area belongs to the Polish voivodeships of Greater Poland and Lubusz. Provided by Wikipedia