50 Maps at the Austrian National Library

Relief von Nieder- und Oberösterreich, Salzburg, Tirol, Vorarlberg, Steiermark, Kärnten und Krain, nach 1865 The Austrian National Library has put online 50 maps from its collection, spanning five centuries. Sorted by century (from the 15th to the 19th) and with one of those zoom interfaces. Text and interface in German only. Thanks to peacay for the link.