United States Centennial Commission. International Exhibition. 1876 Official Catalogue. Part II. Art Gallery, Annexes, and Out-Door Works of Art. Department IV.--Art. Sixth and Revised Edition.

The Teutonic Knights were one of the great chivalric orders that emerged from the Crusades, alongside the Hospitallers and Templars, but while those other knights made their names in the Holy Land, ...

It was not the first time an attempt had been made to subjugate them. Adalbert of Prague, Bolesław IV of Poland, the Kievan Rus, and Conrad I of Masovia had tried before, but without lasting success, ...