The National and University Library in Zagreb developed a cooperative portal of digitised Croatian historic newspapers and journals from its own collection and from other Croatian heritage institutions. The main project aims were: production and publishing of digital reproductions on line, browsing and searching of newspaper and journal issues, simple and advanced searches of full text journal articles, enhancing availability of printed national heritage, improving protection of unique and rare originals, creation of a cooperative database of all Croatian historic newspapers and journals, development of standardised and harmonised procedures for digitisation and coordination and rationalisation of digitisation efforts. A system was put into place that enables access to data and digital reproductions and search of a cooperatively built data base with bibliographic data, holdings data of original print serials, microfilms and digital reproductions, information on titles that are being digitised or planned for digitisation in heritage institutions in Croatia, etc. The portal is the central point for search and access to digitised historic newspapers and journals and is a part of the national project of digitisation of archival, library and museum collections Croatian Cultural Heritage, financed by the Ministry of Culture of the Republic of Croatia.