The Dutch National Archives released in june 2011 over 140,000 photos of photographic press agency Anefo as Open Data under a CC-BY-SA license. The metadata is available as CC0 "No Rights Reserved". After an experiment with open data, november 2011. The Anefo pressphoto's are a serious first step of the Dutch National Archives to offer (where pssible) more data as open data. In october 2012 two extra open data-sets were made available.
The Anefo set
The set contains an overview of the Dutch political, social and cultural life between 1959 and 1989. All the big and small news from the sixties, seventies and eighties is captured by photographers. Royal weddings, political crises, European Championships, but also trucks turned over on the motorway, crowded beaches during a heatwave and fire-fighters rescuing a cat from a burning house. The completeness of the set gives it a large historical value for the history of post-war Dutch history.
Anefo as open data
The copyright on the photos made by the photographers working for Anefo has been transferred to the Netherlands Government Information Service (RVD), which in turn transferred the copyright to the Dutch National Archives. The metadata of the photos isn't always complete, but the order of the photos is chronological. Of the initially 150,000 photos in the Anefo set, all photos with an unknown creator or made in commission have been filtered out, resulting in more than 140,000 photos released as Open Data.
The entire photo collection Anefo contains almost 340.000 photos. Not all of these photos are available with a CC license. The photographs on which this license is applicable can be identified by the field field Auteursrechthebbende Nationaal Archief, CC-BY-SA.
With an Open Search API the dataset can be generated. The URL necessary to generate the set records (content plus metadata) is http://www.gahetna.nl/beeldbank-api/opensearch/?q=2.24.01.05. More information about the Open Search can be found on http://www.opensearch.org.
The API returns XML. Most of the XML-tags are easy to match with one of the recordfields in the frontend of the photocollectie.
Through the XML different JPEG sizes can be generated with a maximum of 1280 x 1280 pixels 72 DPI.
Attribution and license
The images are released under the Attribution/Share Alike license. The required attribution text is:
Dutch National Archives, The Hague, Fotocollectie Algemeen Nederlands Persbureau (ANEFO), 1945-1989 - negatiefstroken zwart/wit. Finding aid number 2.24.01.05, item number <xxx-xxxx>.
NL-HaNA, ANEFO / neg. stroken, 1945-1989, 2.24.01.05, item number <xxx-xxxx>.
In addition to the attribution, mentioning the license is important. This can be done easily by adding license: CC-BY-SA to the attribution. This makes it also clear that the image, to certain conditions, can be used and distributed further on. A shortened Attribution text including the license should have the following elements:
NL-HaNA, ANEFO / neg. stroken, 1945-1989, 2.24.01.05, item number <xxx-xxxx>, license: CC-BY-SA
The CC-BY-SA and CC0 licenses are about the copyright only: other rights may be reserved. The National Archives emphasizes Third Parties own responsibility towards Portrait Rights and other rights when processing or publishing the material in this set.
- CCO: Archive 4.VEL (about 3000 inventory numbers) and 475 maps related
- Public Domain: Photocollection WOI, 2873 pictures of the N.V. Vereenigde Fotobureaux Amsterdam
- CC0: Polderreglementskaarten, 693 maps of polderboundaries in South-Holland including the gegeorefereerde coordinates
More information about usage, technique and license of the open data-sets of the Dutch National Archives can be found on www.opencultuurdata.n
Contactgegevens Tim de Haan: tim.de.haan[at]nationaalarchief.nl / @timmietovenaar