Image: greatest nations p03 583
Barbarossa Kneels to his Chief Wases (Henry the Lion Refuses to Aid the Emperor in Crushing Italy) - From the 'painting in the Maximilian Museum at Munich, by the German artist, Phillip Foltz. - from the book: The Story of the Greatest Nations 3, by Edward S. Ellis and Francis Horne, 1901-1914.
- من كتاب الأمم الكبرى 3، إدوارد إس. إيليس وتشارلز فرانسيس هورن، 1901-1914 م.