This study focuses on the research of watermarks contained in nine municipal registers of the feudal towns Boskovice and Letovice during the early modern age (more specifically the years 1484–1761). Seven books belong to Boskovice and two to Letovice; and they contain a total of 20 types of surviving watermarks. Besides their description, the study includes general comparison in the area of the watermarks' research, paper mill identification, a table with conlusions and an appendix with images.