Broodthaers Society of America
Bulletin Internationale du Surréalism 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.