A Princess of Mars by Edgar Rice Burroughs, Science Fantasy

Full of swordplay and daring feats, the novel is considered a classic example of 20th-century pulp fiction. It is also a seminal instance of the planetary romance, a subgenre of science fantasy that became highly popular in the decades following its publication. Its early chapters also contain elements of the Western. The story is set on Mars, imagined as a dying planet with a harsh desert environment. This vision of Mars was based on the work of the astronomer Percival Lowell, whose ideas were widely popularized in the late 19th and early 20th centuries.

The creator of the immortal characters Tarzan of the Apes and John Carter of Mars, Edgar Rice Burroughs is one of the world's most popular authors. His timeless tales of heroes and heroines transport readers from the jungles of Africa and the dead sea bottoms of Barsoom to the miles-high forests of Amtor and the savage inner world of Pellucidar, and even to alien civilizations beyond the farthest star. Mr. Burroughs' books are estimated to have sold hundreds of millions of copies, and they have spawned 60 films and 250 television episodes.