How many legs a Banth has? What is a Mantalia? How long do Green Martians live? Who are the First Born? These and many other answers about the fictional world of Barsoom can be found in the Traveller’s Guide to Mars. The guide is the most complete handbook ever published on the John Carter’s saga by E. R. Burroughs. Aimed at both new and long-time readers, Vol. I of the Guide focuses on A Princess of Mars (1912), The Gods of Mars (1913), and The Warlord of Mars (1913), the first three books of the Martian adventures of the Virginia-born hero created by Burroughs at the beginning of the 20th Century. The handbook is also an ideal companion for those aiming at developing a role-playing campaign on Barsoom. With original illustrations!