Series of seminars entitled Archives, Libraries, Museums: Possibilities of Co-operation within the Global Information Infrastructure have been organized for eight years now by the Croatian Archival Society, Croatian Library Association, Croatian Association of Museums and Department of Information Sciences of the Faculty of Philosophy, Zagreb. Co-organizers are the Croatian State Archives, National and University Library, Museum Documentation Centre and CARNet - Croatian Academy and Research Network. The aim of the seminars is to research the theoretical framework of the possible co-operation of the three sectors, get acquainted with the contemporary information and communication infrastructure, standards and guidelines as a basis for information organizing and a foundation for cooperation, and, on the basis of concrete examples examine possible applications of such considerations. Overview of the topics of the seminars and analysis of results will be presented.