Archives are the current holding institutions of sources.
|Archiv der Erzdiozöse (PL-Pe)|
|Biblioteka Uniwersytecka im. Adama Michiewicza (PL-Pu)|
|Biblioteka Zakladu Muzykologii Uniwersytetu Poznanskiego (PL-Pm)|
|Miejska Biblioteka Publiczna (PL-Pr)|
Organizations are corporate entities that have been involved in the history of a source, typically as an owner, creator, or seller.
Sources that have had their origins in this city.