The study deals with the deeds issued by John III of Dražice, the head of the Prague diocese in 1258-1278. Though established probably during the late life of his predecessor, it was not until John's tenure that the episcopal chancellery was in regular and proper operation.
The paper opens with a survey of the chancellery's daily business and diplomatic production; the main focus, however, lies in analyzing the actual episcopal documents, which have been classified according to their contents and put to further examination.