John à Lasco/Jan Łaski: Epistolae tres lectu dignissimae, de recta et legitima ecclesiarum benè instituendarum ratione ac modo: ad Potentiss. Regem Poloniae, Senatum, reliquos[que] Ordines, Basel 1556
Bronisław Huberman at a young age, ca. 1895 Unknown photographer, albumin print, 14.7 x 10.1 cm, Nationalmuseum Warsaw/Muzeum Narodowe w Warszawie, Inv. No. DI 103634 MNW