Thuvia, Maid of Mars

A Princess of Mars

The Edge of the Knife

A Fighting Man of Mars (Unabridged): optional

The Master Mind of Mars – Audiobook: The Master Mind of Mars: A Science Fantasy Novel - Edgar Rice Burroughs' Extraterrestrial Adventure: Unraveling the Master Mind of Mars

H. Beam Piper & John J. McGuire: Lone Star Planet: An entire planet colonized by Texans. Can this cause problems? You becha pardner. But nothing the Texans can't handle

Omnilingual – Audiobook: Omnilingual: H. Beam Piper's Intriguing Science Fiction Story of Linguistic Discovery

Space Viking (Unabridged)

The Gods of Mars

The Master Mind of Mars

Michael Strogoff; Or, The Courier of The Czar – Audiobook: Michael Strogoff: A Thrilling Adventure of Loyalty and Espionage

Gods of Mars

Masters of Space: A Rip-Roaring Space Epic

The Galaxy Primes