International Institute for Social History.

• Alfabetische catalogus van de boeken en brochures
• Alfabetische catalogus van de Boeken en Brochures van het Internationaal Institute voor Sociale Geschiedenis, Amsterdam
• Alphabetical catalog of the books and pamphlets of the International Institute of Social History, Amsterdam
• Catalogue and texts of the exhibition "Beyond the friendship of the peoples"
• International review for social history
• Pamphlets and leaflets of the Social Democratic Federation and the British Socialist Party, 1883-1931
• Quellen zur Geschichte der Rätebewegung in Deutschland 1918/19
• The Archive of Rudolf Rocker, 1894-1958