In opdracht van de minister de Leidse conservator L. J. F. Janssen bericht Den Haag over de archeologie in Limburg tussen 1848 en 1850 (deel 2) = On request of the minister L. J. F. Janssen reports to The Hague about archeology in Limburg between 1848 and 1850 (part 2) : the Leiden curator - Verhart, Leo 1952- (2024)