The Warlord of Mars is the third book in the Barsoom series by Edgar Rice Burroughs. John Carter must free Dejah Thoris from the clutches of the yellow Martians in the northern polar realm of Okar.
The Gods of Mars – The story of John Carter’s return to Mars and the search for Dejah Thoris. (Barsoom, 2)
A Princess of Mars is the first volume in Edgar Rice Burroughs’ classic Barsoom series. On Barsoom, John Carter, Virginia gentleman, meets, fights for, and weds, Dejah Thoris, a Princess of Mars.