The five previous volumes of the Acta Historiae Neerlandicae appeared under the auspices of the Netherlands Committee for Historical Sciences. When in 1970 this Committee merged with the Historical Society to form the Dutch Historical Society (Nederlands Historisch Genootschap) an opportunity arose to rethink the aims of the Acta's original promotors. Also this sixth and succeeding volumes became the responsibility of the new combined Society as above. The volumes will from now on be published at The Hague by Martinus Nijhoff. From the early days of the Acta language barriers were broken...