Popiołek, B. (2020) “‘There are very few notifications at our court.’ Fr. Tomasz Perkowicz SJ (1652–1720) as the correspondent of Anna Franciszka Zamoyska, the Crown Treasurer. A study on the history of the circulation of information in the Saxon times”, AUPC Studia ad Bibliothecarum Scientiam Pertinentia, 18, pp. 14–31. doi: 10.24917/20811861.18.2.