its opening in 1881), and sent its representatives to international congresses. In 1898, the Academy of Arts and Sciences became the owner of the Polish Library in Paris and opened a scientific station there. The Academy's library in Kraków carried on a broad exchange of publications from the very beginning. In 1921, the PAU became a founding member of the Union Académique Internationale (UAI). After its activities were resumed, the PAU's membership in the UAI was renewed in 1993, and the PAU began to take part in the research and publication projects of this organization. The publication of the Polish series of the "Corpus vasorum antiquorum" (CVA) was completed with volume 10, devoted to Cypriot pottery from the collection of the National Museum in Warsaw. The Kraków sheet in the "" (TIR) was worked out and published, and the material for sheet 12 of the "Atlas du Monde Grec et Romain" was prepared. Three volumes of the Polish series in the "Corpus antiquitatum Americanensium" (CAA) have been published; the first two volumes are devoted to the ceramics and Peruvian textiles in the collection of Kraków Archaeological Museum (the Kluger Collection, formerly the property of the PAU), and the third one deals with the materials of the Polish archaeological mission in Peru. The edition of the Polish series "Sylloge Nummorum Graecorum" (SNG) has been commenced; its first four volumes are devoted to the collection of Greek coins from the Archaeological Museum in Łódź. PAU members are also participating in the realization of such UAI projects as "Corpus philosophorum medii aevi, Civitas litteraria Europaea, Moravia Magna". The PAU has declared its intention of joining new UAI projects, such as the realization of the series "Monumenta palaeographica medii aevi" (volume 1 already worked out), "Mundus Scytho-Sarmaticus et Graeco-Romanus" (together with Ukraine). Thanks to the effective cooperation of the PAU and the UAI, the annual plenary meeting of the UAI (involving representative of 44 academies around the world assembled in the UAI) took place in Kraków in 1999, during which the PAU's representative, , was elected officer of the UAI; since 2007 he has been the vice-president of the organization. A cooperation agreement has been signed with the Slovak Academy of Sciences. This bore fruit especially in the field of archaeology, for instance in the realization of joint investigation of archaeological sites in eastern and south-western Slovakia as well as in the research into