the all-powerful Jeddak, who reaches this position through combat. They are tribal, and war among one another. They are primitive, intellectually backwards, and have no art or written language. Any advanced technology they possess is stolen from the Red Martians. They inhabit the ancient ruined cities of Barsoom. The series A Princess of Mars (1917) (Project Gutenberg ebook) The Gods of Mars (1918) (ebook) The Warlord of Mars (1919) (ebook) Thuvia, Maid of Mars (1920) (ebook) The Chessmen of Mars (1922) (ebook) The Master Mind of Mars (1928) (ebook) A Fighting Man of Mars (1931) Swords of Mars (1936) Synthetic Men of Mars (1940) Llana of Gathol (1948) (ebook) John Carter of Mars (1964) Copyright The copyright for this story has expired in the United States and, thus, resides in the public domain there. The text is available from Project Gutenberg. In anticipation of the 2012 Disney film John Carter, Edgar Rice Burroughs, Inc. trademarked the phrases "John Carter of Mars", "Princess of Mars", and "Barsoom", among others, despite the Dastar decision of the United States Supreme Court, which invalidates trademark on public domain works. Except for Guatemala, Honduras, Samoa, Saint Vincent and the Grenadines, Colombia, Equatorial Guinea and Mexico, Burroughs' works, including A Princess of Mars, has entered public domain in the rest of the world. Film adaptations The Asylum released a feature-length direct-to-DVD film based on the novel, titled Princess of Mars, on December 29, 2009. A full-length feature film of the novel had been attempted and aborted many times. Its working title was originally A Princess of Mars, but it was renamed John Carter of Mars and then simply John Carter during pre-production. It was originally due in 2006, with Jon Favreau (Zathura, Iron Man, Cowboys & Aliens) as director and Harry Knowles of Ain't It Cool News as producer. John Carter was produced by Walt Disney Pictures and directed by Andrew Stanton. Taylor Kitsch and Lynn Collins, who appeared together in the 2009 movie X-Men Origins: Wolverine, play John Carter and Dejah Thoris. Willem Dafoe, Polly Walker, and James Purefoy play Tars Tarkas, Sarkoja, and Kantos, respectively. The film's U.S. release date was March 9, 2012. References Notes Bibliography External links Text of the novel at Project Gutenberg The Official Princess of Mars site from Edgar Rice Burroughs, Inc. ERBzine.com Illustrated Bibliography: A Princess of Mars Edgar Rice Burroughs Summary Project page for A Princess of