At the Earth's Core is a 1914 fantasy novel by Edgar Rice Burroughs, the first in his series about the fictional -hollow earth- land of Pellucidar. The author relates how, traveling in the Sahara desert, he has encountered a remarkable vehicle and its pilot, David Innes, a man with a remarkable story to tell. David Innes is a mining heir who finances the experimental -iron mole, - an excavating vehicle designed by his elderly inventor friend Abner Perry. In a test run, they discover the vehicle cannot be turned, and it burrows 500 miles into the Earth's crust, emerging into the unknown...

Thuvia, Maid of Mars is a science fantasy novel by Edgar Rice Burroughs, the fourth of the Barsoom series. The principal characters are Carthoris (the son of John Carter of Mars) and Thuvia of Ptarth, each of whom appeared in the previous two novels. In this novel the focus shifts from John Carter, Warlord of Mars, and Dejah Thoris of Helium, protagonists of the first three books in the series, to their son, Carthoris, prince of Helium, and Thuvia, princess of Ptarth. Helium and Ptarth are both prominent Barsoomian city state/empires, and both Carthoris and Thuvia were secondary characters in...

The Chessmen of Mars is a science fantasy novel by American wrtier Edgar Rice Burroughs, the fifth of his Barsoom series. Burroughs began writing it in January, 1921, and the finished story was first published in Argosy All-Story Weekly as a six-part serial in the issues for February 18 and 25 and March 4, 11, 18 and 25, 1922. It was later published as a complete novel by A. C. McClurg in November 1922. In this novel Burroughs focuses on a younger member of the family established by John Carter and Dejah Thoris, protagonists of the first three books in the series. The heroine this time is...

The Warlord of Mars is a science fantasy novel by American writer Edgar Rice Burroughs, the third of his Barsoom series. This novel continues where the previous one in the series, The Gods of Mars abruptly ended. At the end of the previous book, John Carter's wife, the princess Dejah Thoris, is imprisoned in the Temple of the Sun by the vile pretender goddess Issus. It is said one has to wait an entire Barsoomian year before the room the prisoner is in revolves back to the entrance. Edgar Rice Burroughs (September 1, 1875 - March 19, 1950) was an American writer best known for his creations...