Incunable

An incunable, or sometimes incunabulum, is a book, pamphlet, or broadside printed in Europe before the year 1501. As of 2014, there are about 30,000 distinct known incunable editions extant. The number of surviving copies in Germany alone is estimated at around 125,000.
Ignacy Mościcki

Ignacy Mościcki was a Polish chemist, politician, and President of Poland from 1926 to 1939. He was the longest serving President in Poland's history.
National Library of Russia

The National Library of Russia in Saint Petersburg, is not only the oldest public library in the nation, but also the first national library in the country. The NLR is currently ranked among the world’s major libraries. It has the second richest library collection in the Russian Federation, a treasury of national heritage, and is the All-Russian Information, Research and Cultural Center. Over the course of its history, the Library has aimed for comprehensive acquisition of the national printed output and has provided free access to its collections. It should not be confused with the Russian State Library, located in Moscow.
Załuski Library
The Załuski Library was built in Warsaw in 1747–1795 by Józef Andrzej Załuski and his brother, Andrzej Stanisław Załuski, both Roman Catholic bishops. The library was the first Polish public library, the largest library in Poland, and one of the earliest public libraries in Europe.
John Baptist Albertrandi
John Baptist Albertrandi was a Polish Jesuit, bishop and historian of Italian extraction, born in Warsaw.
Józef Andrzej Załuski
Józef Andrzej Załuski was a Polish Catholic priest, Bishop of Kiev, a sponsor of learning and culture, and a renowned bibliophile. A member of the Polish nobility (szlachta), bearing the hereditary Junosza coat-of-arms, he is most famous as co-founder of the Załuski Library, one of the largest 18th-century book collections in the world.
Andrzej Stanisław Załuski
Andrzej Stanisław Kostka Załuski was a priest (bishop) in the Polish-Lithuanian Commonwealth.
Thomas Phillipps

Sir Thomas Phillipps, 1st Baronet was an English antiquary and book collector who amassed the largest collection of manuscript material in the 19th century. He was an illegitimate son of a textile manufacturer and inherited a substantial estate, which he spent almost entirely on vellum manuscripts and, when out of funds, borrowed heavily to buy manuscripts, thereby putting his family deep into debt. Phillipps recorded in an early catalogue that his collection was instigated by reading various accounts of the destruction of valuable manuscripts. Such was his devotion that he acquired some 40,000 printed books and 60,000 manuscripts, arguably the largest collection a single individual has created, and coined the term "vello-maniac" to describe his obsession, which is more commonly termed bibliomania.
Jagiellonian Library
Jagiellonian Library is the library of the Jagiellonian University in Kraków and with almost 6.7 million volumes, one of the biggest libraries in Poland, serving as a public library, university library and part of the Polish national library system. It has a large collection of medieval manuscripts, for example Copernicus' De Revolutionibus and Jan Długosz's Banderia Prutenorum, and a large collection of underground literature from the period of communist rule in Poland (1945–1989). The Jagiellonian also houses the Berlinka art collection, whose legal status is in dispute with Germany.
Destruction of Warsaw

The destruction of Warsaw was Nazi Germany's substantially-effected razing of the city after the 1944 Warsaw Uprising. The uprising had infuriated German leaders, who decided to make an example of the city, which they had long since selected for major reconstruction as part of their planned Germanization of Central Europe.
Royal Castle Library, Warsaw
The Library at the Royal Castle is a large building adjacent to the Royal Castle in Warsaw, Poland. It was built between 1779 and 1783 according to design of Dominik Merlini and Jan Chrystian Kamsetzer in order to accommodate the royal collection of books belonging to King Stanisław August Poniatowski, the last King of sovereign Poland.
Codex Suprasliensis

The Codex Suprasliensis is a 10th-century Cyrillic literary monument, the largest extant Old Church Slavonic canon manuscript and the oldest Slavic literary work in Poland. As of September 20, 2007, it is on UNESCO's Memory of the World list.
Berlinka (art collection)

The Berlinka ('Berliner'), also Pruski skarb, is the Polish name for a collection of German original manuscripts originally kept at the Prussian State Library in Berlin, which since the end of World War II are held by the Jagiellonian Library in Kraków. The legal status of the documents is subject of an ongoing debate.
Warsaw Public Library

Warsaw Public Library is one of the main libraries in Warsaw, and one of the largest in Poland.
Warsaw University Library

Warsaw University Library is a library of the University of Warsaw, Poland.
Friends of the Constitution

Zgromadzenie Przyjaciół Konstytucji Rządowej was the first modern Polish political party, formed in May 1791, shortly after the adoption of the Constitution of May 3, 1791, by the efforts of the Patriotic Party. The purpose of the Friends of the Constitution was to defend the reformed political system and to introduce further reforms.
World War II looting of Poland

The looting of Polish cultural artifacts during World War II was carried out by Nazi Germany and the Soviet Union side by side after the invasion of Poland of 1939. A significant portion of Poland's cultural heritage, estimated at about half a million art objects, was plundered by the occupying powers. Cataloged pieces are still occasionally recovered elsewhere and returned to Poland.
Polish Library in Paris
The Polish Library in Paris is a Polish cultural centre of national importance and is closely associated both with the historic Great Emigration of the Polish élite to Paris in the 19th-century and the formation in 1832 of the Literary Society, later the Historical and Literary Society. The Library was founded in 1838 by Adam Jerzy Czartoryski, Julian Ursyn Niemcewicz and Karol Sienkiewicz, among others. Its first task was to safeguard all surviving books, documents, archives and treasures of national significance. It has become a historical and documentary resource open for the use of Poles and other researchers and visitors. The Library houses three museums related to significant Polish artists: the Salon Frédéric Chopin, the Adam Mickiewicz Museum and the Bolesław Biegas Art collection. UNESCO's Memory of the World Register rates it as an institution unique of its kind.
Polona

Polona – Polish digital library, which provides digitized books, magazines, graphics, maps, music, fliers and manuscripts from collections of the National Library of Poland and co-operating institutions. It begun its operation in 2006 .