A Princess of Mars by Edgar Rice Burroughs published in 1917 an ebook of 147 pages
After the Civil War, John Carter looked to make his fortune in the Arizona Territory. With a friend, John Carter finds a gold mine in the Apache country. The Apache kill the friend and chase John Carter into a strange cave. As John Carter wonders why the Apache are afraid to follow him into the cave, he finds himself transported to the planet Barsoom (Mars). There he finds strange races, strange customs, and love in the form of the beautiful Dejah Thoris.
This is the first of eleven books written by Burroughs that are available in ebook formats.