Frederick III (who collected the 110 books that were the core inventory of the later library) had also been instrumental in centralizing art treasures and book collections. Maximilian became a bibliophile during the time he was in the Low Countries. As husband of Mary of Burgundy, he would come into possession of the huge Burgundian library, which according to some sources was brought to Austria when he returned to his native land. According to the official website of the Austrian National Library though, the Habsburgs only brought the collection to Vienna in 1581. Maximilian also inherited the Tyrol library of his uncle Sigismund, also a great cultural patron (which had received a large contribution from Eleanor of Scotland, Sigismund's wife and also a great lover of books). When he married Bianca Maria, Italian masterpieces were incorporated into the collection. The collection became more organized when Maximilian commissioned Ladislaus Sunthaim, Jakob Mennel and Johannes Cuspinian to acquire and compose books. By the beginning of the sixteenth century, the library had acquired significant Bohemian, French and Italian book art. In 1504, Conrad Celtis spoke the first time of the Bibliotheca Regia (which would evolve into the Imperial Library, and as it is named today, the Österreichische Nationalbibliothek or the Austrian National Library), an organized library that had been expanded through purchases. Maximilian's collection was dispersed between Innsbruck, Vienna and Wiener Neustadt. The Wiener Neustadt part was under Conrad Celtis's management. The more valuable part was in Innbruck. Already in Maximilian's time, the idea and function of libraries were changing and it became important that scholars gained access to the books. Under Maximilian, who was casual in his attitude to scholars (which marvelled the French chronicler Pierre Frossart, it was fairly easy for a scholar to gain access to the emperor, the court and thus the library. But despite the intention of rulers like Maximilian II (and his chief Imperial Librarian Blotius) and Charles VI to make the library open to the general public, the process was only completed in 1860. During Maximilian's time, there were several projects of an encyclopaedic nature, among them the incomplete projects of Conrad Celtis. However, as the founder of the Collegium poetarum et mathematicorum and a "program thinker" (programmdenker, term used by Jan-Dirk Müller and Hans-Joachim Ziegeler), Celtis established an encyclopaedic-scientific model that increasingly integrated and favoured mechanical arts in relation to the combination between natural sciences