21 books published in the US before 1923, and hence in the public domain, including eight Tarzan and five Mars books. Intended for use with Windows PCs and recent Macs (OS X), these books are in plain-text format, organized for easy access.
Edgar Rice Burroughs was an American author, best known for his creation of the jungle hero Tarzan and the heroic John Carter, although he produced works in many genres.