Radio Netherlands is resurrecting some of these documentaries for weekly airing during the current broadcasting season.
Check out "Classic Dox" here: http://www.rnw.nl/radio-
available via shortwave radio, World Radio Network (on Sirius/XM and streaming) as well as via Radio Netherlands' own website.
The archive was not brought over directly to the new Radio Netherlands website, but can be found here: http://static.rnw.nl/migratie/www.radionetherlands.nl/documentaries/index.html-redirected
Thanks to the Audio Documentary enthusiasts' website http://www.audiodocumentary.org for this info.