The collected archives consist of documents from organizations such as the South Africa Committee (from the 1960s), the Dutch Anti-Apartheid Movement, the Angola Committee/Holland Committee on Southern Africa, the Eduardo Mondlane Foundation, Institute for Southern Africa and Broadcasting for Radio Freedom. They also include materials from and about well-known activists, such as Sietse Bosgra, Conny Braam, Peter Waterman and Klaas de Jonge, and the archives of a number of local Southern Africa groups.

The documentation collections are made up of a large number of books, journals, photographs, posters and hundreds of videos, cassettes, badges, flags, T-shirts and other memorabilia. See also the overview of Anti-Apartheid and Southern Africa collections.