The IISH collections comprises archive, library and audio-visual material with a thematic emphasis on social and emancipatory movements. The Institute holds over 5,000 archives, more than 1,000,000 printed volumes, and an equivalent number of audio-visual items including posters. Collection development at the IISH focuses increasingly on digital archives and data. The Institute has become one of the world’s greatest data centres for social-economic history, devising new techniques for enabling methodologically innovative research.
The RIAS is a library and archive located in Middelburg with substantial collections on the history of the United States, both in terms of domestic affairs and foreign relations. Microfilm and digital collections cover the 20th century, but there are extensive holdings on the Cold War period, including presidential papers (covering Truman to Carter), State Department and USIA reports, Civil Rights, and the Vietnam War. There are also the Declassified Documents Reference System (DDRS), the New York Times online archive, and other digital collections available for researchers visiting the Institute.
The National Archives of the Netherlands (Nationaal Archief), which is situated in The Hague, holds over 3.5 million records that have been created by the central government, organisations and individuals and are of national significance. The archives hold records from most of the Dutch ministries. Many records relate to the colonial and trading history of the Netherlands in the period from 1600 to 1975. The Dutch presence in countries in North and South America, Africa and Asia is reflected within these collections.