Top Archives

The IISH holds more than 3200 archival collections. Most of the archives have to be consulted in the Reading room. The top 50 of most consulted archives in 2011 shows a mixture of Dutch and international archives, the archive of Socialist International being the most popular:

1. Socialist International (2)
2. PvdA (11)
3. CNT (España) (20)
4. ...see more...

The inventories of all archives can be found on the website. The overview of most consulted inventories in 2011 shows a different list, more related to popular topics on the internet or in international developments:

1. Paul Mattick Papers (1)
2. Social and political movements in the Philippines Collection (2)
3. Diego Abad de Santillán (-)
4. ...see more...