novel. Publication Serialization When Burroughs received his acceptance letter from Thomas Metcalf of The All-Story, Metcalf said that the serial would be published under the title "In the Moons of Mars". However, when the first part of the serialization appeared in the February 1912 edition of The All-Story, it bore the title "Under the Moons of Mars". For the publication of the serial, Burroughs used the pen name "Normal Bean", which he selected as a pun to stress that he was in his right mind, as he feared ridicule for writing such a fantastic story. The effect was spoiled by a typesetter who interpreted "Normal" as a typographical error and changed it to "Norman." Book By 1914, Burroughs had become very popular with the reading public, and A.C. McClurg & Company decided to print a number of his formerly serialized tales as novels. McClurg began with three Tarzan novels, and then published A Princess of Mars on October 10, 1917. Although Metcalf thought that the chapter "Sola Tells Me Her Story" slowed the story's pace, and thus omitted it from the magazine serialization, this chapter was restored for the novel version. The novel was illustrated by Frank E. Schoonover, who carefully read the descriptive passages on the costumes and weapons of Barsoom and developed an overall concept for the artwork, even ensuring that John's Carter's pistol and belt in his cover illustration reflected their origins in Green Martian craftsmanship. Rights A Princess of Mars was one of the few works for which Burroughs, in his inexperience as a new writer, relinquished all serialization rights. Others included the sequel The Gods of Mars and Tarzan of the Apes. Genre While the novel is often classed as science fantasy, it also belongs to the subgenre of planetary romance, which has affinities with fantasy and sword and sorcery; it is distinguished by its inclusion of scientific (or pseudo-scientific) elements. Planetary romances take place primarily on the surface of an alien world, and they often include sword-fighting and swashbuckling; monsters; supernatural elements such as telepathic abilities (as opposed to magic); and cultures that echo those of Earth in pre-industrial eras, especially with dynastic or theocratic social structures. Spacecraft may appear, but are usually not central to the story; this is a key difference from space opera, in which spacecraft are usually key to the narrative. While there are earlier examples of this genre, A