The Peace Palace Library has a large amount of a valuable historic reference works. Lately we digitized a number of those works, and made them available in our open content repository as a special collection of Historic Reference Works. Because some of the files are large, you will be asked for patience when downloading.
Other collections -some still under construction- can be found in our collections overview!
A few examples are:
Collection of eighty relevant historic reference works in six different languages.
To use this collection, click here. »