The Hungarian Medieval Studies Research Group, together with the National Archives of Hungary and the Archives of Pest County, organized the Medieval Book Fair on May 9 this year. As per tradition, the Fraknói Research Group participated in the event, where visitors had the opportunity to become acquainted with its latest publications, including the Fraknói Memorial Volume and The Centuries of the Archdiocese of Kalocsa. Among the new releases, the fair was the first occasion where attendees could hold in their hands the freshly printed source publication The Medieval Account Book of the Cathedral Chapter of Győr (1495–1528), issued jointly by the Diocesan Collection Centre of Győr and the Research Group.