About the The National Library of Poland: The National Library is the central library of the state and one of the most important cultural institutions in Poland. The National Library has (including duplicates) over 8 600 000 registered items. Digital reproductions of the National Library’s collections are available in the digital National Library POLONA. Via POLONA we are available over 2 mln library resources: books, old prints, manuscripts, graphics, maps, scores, photographs, flyers, posters and postcards. Until to 2020, thanks to the implementation of the “Patrimonium” project, we will digitize and being make available another million. More about POLONA: https://polona.pl/page/about-polona/.