[2870] Posen, *Posnania. – Adj. Posnaniensis.
Brockhaus-1837: Posen
Brockhaus-1911: Posen [2] · Posen
DamenConvLex-1834: Posen
Herder-1854: Posen [2] · Posen [1]
Meyers-1905: Posen [3] · Posen [4] · Posen [1] · Posen [2]
Pierer-1857: Posen [2] · Posen [1]