I am currently working on this page. As soon as I have some information I will update it.
For starters here are some books you may want to read.
Burroughs, Edgar Rice: At the Earth's Core
Burroughs, Edgar Rice: The Beasts of Tarzan (local HTML)
Burroughs, Edgar Rice: The Eternal Lover (See The Eternal Savage)
Burroughs, Edgar Rice: The Eternal Savage (HTML at Virginia)
Burroughs, Edgar Rice: The Gods of Mars (local HTML)
Burroughs, Edgar Rice: Jungle Tales of Tarzan
Burroughs, Edgar Rice: The Lost Continent
Burroughs, Edgar Rice: The Mad King (illustrated HTML at Virginia)
Burroughs, Edgar Rice: The Monster Men
Burroughs, Edgar Rice: The Mucker (Gutenberg text)
Burroughs, Edgar Rice: The Oakdale Affair (Gutenberg text)
Burroughs, Edgar Rice: The Outlaw of Torn (Gutenberg text)
Burroughs, Edgar Rice: A Princess of Mars (local HTML)
Burroughs, Edgar Rice: The Return of Tarzan (local HTML)
Burroughs, Edgar Rice: The Son of Tarzan (local HTML)
Burroughs, Edgar Rice: Tarzan and the Jewels of Opar (local HTML)
Burroughs, Edgar Rice: Tarzan of the Apes (local HTML)
Burroughs, Edgar Rice: Thuvia, Maid of Mars (local HTML)
Burroughs, Edgar Rice: The Warlord of Mars (local HTML)