Meanwhile, the estates, with the tardy assent of Vienna, had undertaken to pay the expenses of publishing Palacký's capital work, "Dějiny národu českého v Čechách a v Moravě" ("The History of the Czech Nation in Bohemia and Moravia"). This book, which comes down to the year 1526 and the extinction of Czech independence (Palacký admitted that in writing about the national history since 1526, he "would have to lie"), was founded on laborious research in the local archives of Bohemia and in the libraries of the chief cities of Europe, and remains the standard authority. The first volume was printed in German in 1836, and subsequently translated into Czech. The publication of the work was hindered by the police-censorship, which was especially active in criticizing his account of the Hussite movement.