Illustrations of Ilkhanids in the Diez Album
an early 14th century copy of

Jami‛ al-Tawarikh
by Rashid al-Din.

Universal History or Compendium of Chronicles

Ğāmi‛ al-tavārīḫ. Rašīd al-Dīn Fazl-ullāh Hamadānī

Hulāgu and his envoy (ilči) leading his army against the castles of the Assassins