The Centre for Historical Research and Documentation on War and Contemporary Society is a public federal research institution which collects documentation and carries out research on the wars and conflicts of the twentieth century and their impact on Belgium. Since 1969, the Centre collects archives, books, periodicals, newspapers, photographs, interviews, posters and leaflets. This documentation is accessible through the Pallas integrated information system and can be consulted in the reading room of the monumental buildings at the Square de l'Aviation in Brussels.