The catalog is dedicated to those manuscripts of the Austrian National Library which were commissioned by King Wenceslas IV (1361?1419) and the Prague court. It forms a unit together with the catalog ?Central European Schools III (Bohemia - Moravia - Silesia - Hungary, ca 1350?1400)? published in 2004, and completes the investigations concerned with the art of book illumination in the Central and Eastern regions during the second half of the 14th Century.