Jagiellonian Library
Jagiellonian Library (, popular nickname "Jagiellonka") 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 (so-called "drugi obieg" or samizdat) 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.
University of Iowa
The University of Iowa library system is the state's largest library and comprises the Main Library, the Hardin Library for the Health Sciences, five branch libraries, and the Law Library. The University Libraries' holdings include more than five million bound volumes, more than 200,000 rare books and 1000 historical manuscript collections. Significant holdings include Hardin Library's John Martin Rare Book Room, the Iowa Women's Archives, the Louis Szathmary culinary arts collections, science fiction collections, and works of Walt Whitman. The comic books collection in the Special Collections contains original art for 6,000 cartoons, film and television scripts, zines and other underground or amateur publications, as well as mainstream books, from throughout the 20th and 21st centuries.