The website of Hungarian museums
http://www.museum.hu/
The Bihar Museum
http://biharimuzeum.hu/
University and National Library University of Debrecen
University of Debrecen, Department of Ethnography
http://neprajz.unideb.hu/
University of Debrecen, Historical Institutions
http://delfin.klte.hu/~history
Debrecen-Nyíregyháza Diocesan Archives
http://www.melte.hu/?q=node/75
Hajdú-Bihar County Archive of Hungarian National Archive
http://hbml.archivportal.hu/
The Archive of Area Bucea Reformed Diocese (Oradea)
http://www.melte.hu/?q=node/152
Hompage of archives
http://leveltar.lap.hu/
The Institute of Hungarian Literature ank Cultural Studies
http://www.irodalom.arts.unideb.hu/
Hungarian Archival Portal
http://www.archivportal.hu/
Méliusz Juhász Péter County Library and Community Center
http://www.hbmk.hu/
Roman Catholic Diocesan Archive
http://www.varad.org/hu/leveltar
Society for protecting Monuments and Memorial of Partium and Banat
http://www.pbmet.ro/
Beyond the Tisza Reformed Diocesan Archive
http://leveltar.drk.hu/