Netherlands
Directory: Archiefnet
Dutch National Archive offers digitized collections, especially colonial archives from Surinam and the West Indies
Research guide to libraries and archives in the Low Countries, by Martha L. Brogan. NY: Greenwood Press, 1991.
LOCATION: Widener: WID-LC Z813.A1 B76 1991
Catalogus Epistularum Neerlandicarum (CEN)
--Records of post-1600 letters in Dutch libraries. Password required.