"The Gods of Mars was first published in All-Story Magazine as a five-part serial, January through May 1913"--Title page verso.
Summary
Carter returns to Barsoom after a ten-year separation from his wife Dejah Thoris, his unborn child, and the Red Martian people of the nation of Helium, whom he has adopted as his own. Unfortunately, Carter materializes in the one place on Barsoom from which nobody is allowed to depart: the Valley Dor, which is the Barsoomian afterlife.