The online dictionary was created as part of a Czech retrospective bibliography, Knihopis digital. It is possible to search by names, including variants thereof, of letterpress printers. A personal data field for the relevant printer is displayed (a brief biography), addresses where he worked, active periods, predecessors and successors in the relevant printing house, and literature on the topic.

• Person responsible for administration of information source:
  Jiří Žůrek (zurek@ics.cas.cz)
• Current content of information source:
  1,815 entries
• Online access:
  http://www.clavmon.cz/chyyba/