The lecture contains part of the correspondence between Bohuslav Balbín and the Premonstratensian Alois Hackenschmidt. The initial part deals with Hackenschmidt's life and working in Teplá monastery and summarizes the content of the letters.
These served to mutual cooperation and information flow and render about numerous Balbín's works and reactions to them. However, the letters also have a personal level.
Then follows a commented translation of three Hackenschmidt's letters and one Balbín's letter from the given period.