CEN is a national database of letters kept in the collections of cooperating heritage institutions in the Netherlands. It concerns mainly:
CEN contains approximately 500,000 descriptions of single letters and parts of correspondences written in the early modern and modern periods (ca. 1500 – present). CEN thus provides information about more than two million letters in total. The database is updated on a regular basis. New descriptions can be found with search key Date of cataloguing (upd).
Compilation and copyright:
c/o Royal Library
P.O. Box 90407
2509 LK The Hague