In addition to a wide variety of data, mostly of an economic nature, Schallers's Topographie des Königreiches Böhmen also provided information in several fields of auxiliary historical sciences. One of the questions in the questionnaire focused on the shape of the coats of arms of the cities and towns. This study deals with an analysis of two parts of Schaller's Topographie for the Boleslav and Rakovník regions from the perspective of heraldry and attempts to give an answer to the question of how far this work is still useful primarily for research into the historical development of civic heraldry.