The public collection is a collective term, which contains national, local or public library’s, archives, picture and sound archives and museums. These institutions are collecting and systemizing document and allow them for use. There are public collections in ecclesiastical ownership and there are valuable private collections, which in some fortune cases serve scientific research in public collections. So is it in Szabolcs-Szatmár-Bereg County, where many public collections contain the history of the region, including the lives of the inhabitants, their naturals and the economic conditions. There are other serious sources besides the well know county library, archives and museum. The goal of this study is to introduce these not well-known sources for bigger audience. For an area where the border has been severely changed by the history, the importance of cross-border archives, virtual books and data are more relevant to researchers. Among national database this study presents a number of local portals such as the “olvass-sokat.hu” or the “Byzantinohungarica” portal which created by the Greek Catholic Heritage Research Group.
Keywords: regional research, public collections, information supply, databases