The Chessmen of Mars
"The Chessmen of Mars" by Edgar Rice Burroughs. Public domain in the United States. Source: https://www.gutenberg.org/ebooks/1153. Text and audio edition: LivingBooks.
"The Chessmen of Mars" by Edgar Rice Burroughs. Public domain in the United States. Source: https://www.gutenberg.org/ebooks/1153. Text and audio edition: LivingBooks.