Józef Andrzej Załuski and his brother Andrzej Stanisław Załuski acquired the collections of earlier Polish bibliophiles such as Jakub Zadzik, Krzysztof Opaliński, Tomasz Ujejski, Janusz Wiśniowiecki, Jerzy Mniszech and Jan III Sobieski (the latter, from his granddaughter, Maria Karolina Sobieska).
Jakub Karol Parnas | Jakub Arbes | Jakub Zadzik | Jakub Petelewicz | Jan Jakub Kotík | Jakub Vrzáň | Jakub Šulc | Jakub Sobieski | Jakub Kubicki | Jakub Kryštof Rad | Jakub Deml | Jakub Błaszczykowski |