Janusz, chancellor of Archbishop Pełka and Duke Casimir Konradovic (1232-1252 and 1252/1253-1258), 87-125 Franciszek Sikora
Jarosław of Skotniki Bogoria, the Archbishop of Gniezno, legislator and diplomat (d. 1376) 53-96 Zofia Kowalska-Urbankowa
Jarosław-Kazimierz, the first unsuccessful Cistercian foundation in Upper Silesia 189-201 Antoni Barciak
Jewels of the spirituality of the Polish land: P. Stefaniak, Saint Kinga Arpadówna OSC - life and work, Krakow 2012 249-251 Piotr Stefaniak
Krakow, Zawichost, Nowe Miasto Korczyn, Skała, Sącz: urban plans as a source for research into the times of Bolesław Wstydliwy, Blessed Salomea and Saint Kinga 147-196 Bogusław Krasnowolski
Kruszwica - Włocławek - Szpetal. The "Kujawy" episode in the history of the Benedictine abbey in Mogilno 263-282 Marek Derwich
Last wills and testaments of patients of the Hospital of the Holy Spirit in Rome in the 18th-19th centuries 103-129 Marian Surdacki
Life and Passion of the Five Brothers Martyrs of the First Polish Diocese of Poznań 231-239 Irena Byrska
Lower cathedral clergy in mediaeval Poland. Vicars of the Płock cathedral in the 13th - mid-15th centuries. Part 1. Staff composition 5-43 Andrzej Radzimiński
