Documents, photographs, witness statements, films and all sources systematically collected by Porta Polonica are digitized and recorded in a database.
![Poster "P" of the Volksbund für das Deutschtum im Ausland - Collection Porta Polonica [from BPK]](/sites/default/files/styles/width_100_tiles/public/assets/images/plakat_p.jpg?itok=3tWI7KyG "Poster \"P\" of the Volksbund für das Deutschtum im Ausland")