http://www.iisg.nl
The website of the 'Internationaal Instituut voor Sociale Geschiedenis'. With information about the Institute as well as virtual exhibitions, digital archives and links to other websites relating to social history.

http://www.iisg.nl/bwsa/
Biografical Dictionary of Socialism and the Labour movement in The Netherlands. With (in march 2003) 577 biografies of men and women who played a role in the labour movement.