- Political parties--Prussia (Germany)--History--19th century (2)
- Conservatism--Prussia (Germany)--History--19th century (1)
- Poland--Relations--Prussia (Germany) (1)
- Political parties--Prussia (Germany)--History--20th century (1)
- Poznań (Poland : Voivodeship)--Politics and government (1)
- Prussia (Germany)--Politics and government--1870-1947 (1)
- Prussia (Germany)--Relations--Poland (1)
- Prussia (Germnay)--Politics and government--1848-1849 (1)