The Dragon of the Ishtar Gate
L. Sprague de Camp
 The novel concerns the quest of Bessas of Zarispa, a young officer of the 'Immortals' regiment, for the ingredients of a potion that the King has been told will give him immortality; the blood of a dragon and the ear of a king. Unbeknownst to Bessas, the third ingredient is the heart of a hero, and therefore Bessas' own. Relying on information given him by the priests of Marduk in Babylon that a reptile depicted in reliefs on their temple, the sirrush, is a real dragon and lives at the headwaters of the Nile, Bessas sets out for the source of the Nile, accompanied by his former tutor, Myron of Miletos, who is bored of teaching and wants to make a name for himself in the field of philosophy.