Broodthaers Society of America
Bulletin International du Surréalisme Révolutionnaire
No evidence of Marcel Broodthaers in print here, but since this conference was co-organized by one of his partners in crime, Christian Dotremont, it's highly likely that MB attended. He did contribute to the subsequent publication, Le Surréalisme Révolutionnaire.
Bruxelles: 1948. French.