Documents, photographs, witness statements, films and all sources systematically collected by Porta Polonica are digitized and recorded in a database.
![A festively dressed group in front of the portal entrance to St. Barbara of Röhlinghausen - Photo card, 1912 at the earliest [the year of the church's consecration]](/sites/default/files/styles/width_100_tiles/public/assets/images/Festliche%20Gruppe.jpg?itok=S2wHhY3t "A festively dressed group in front of the portal entrance to St. Barbara of Röhlinghausen")