- (1912) Novel: "A Princess Of Mars" (a "Barsoom" novel). NOTE: Filmed as John Carter (2012).
- (1922) Novel: "At the Earth's Core" (a "Pellucidar" novel). NOTE: Filmed as At the Earth's Core (1976), The Underground World (1943).
- (1934) Novel: "Lost on Venus"
- (1918) Novel: "Out of Time's Abyss"
- (1913) Novel: "The Return of Tarzan".
- (1932) Novel: "Pirates of Venus"
- (1963) Novel: "Savage Pellucidar" (a "Pellucidar" novel)
- (1944) Novel: "Land of Terror" (a "Pellucidar" novel)
- (1937) Novel: "Back to the Stone Age" (a "Pellucidar" novel)
- (1930) Novel: "Tanar of Pellucidar" (a "Pellucidar" novel)
- (1923) Novel: "Pellucidar" (a "Pellucidar" novel)
- (1964) Novel: "John Carter of Mars" (a "Barsoom" novel)
- (1948) Novel: "Llana of Gathol" (a "Barsoom" novel)
- (1940) Novel: "Synthetic Men of Mars" (a "Barsoom" novel)
- (1936) Novel: "Swords Of Mars" (a "Barsoom" novel)
- (1931) Novel: "A Fighting Man of Mars" (a "Barsoom" novel)
- (1928) Novel: "The Master Mind of Mars" (a "Barsoom" novel)
- (1922) Novel: "The Chessmen of Mars" (a "Barsoom" novel)
- (1920) Novel: "Thuvia, Maid of Mars" (a "Barsoom" novel)
- (1919) Novel: "The Warlords of Mars" (a "Barsoom" novel)
- (1932) Novel: "Jungle Girl". NOTE: Filmed as Jungle Girl (1941).
- (1946) Novel: "Escape on Venus".
- (1939) Novel: "Carson of Venus"
- (1921) Novel: "Tarzan the Terrible"
- (1919) Novel: "Tarzan the Untamed".
- (1914) Novel: "The Beasts of Tarzan"
- (1914) Novel: "The Gods of Mars"
- Novel: "Bringing Up Baby". NOTE: Filmed as The Oakdale Affair (1919).
- Novel: "The Revenge of Tarzan". NOTE: Filmed as The Revenge of Tarzan (1920).
- (1914) Novel: "The Son of Tarzan". NOTE: Filmed as The Son of Tarzan (1920).
- (1916) Novel: "Jungle Tales of Tarzan". NOTE: Filmed as Tarzan the Mighty (1928).
- (1916) Novel: "Tarzan and the Jewels of Opar". NOTE: Filmed as Tarzan the Tiger (1929).
- (1917) Story: "The Lad and the Lion". NOTE: Filmed as The Lion Man (1936), The Lad and the Lion (1917).
- Novel: "Tarzan in Istanbul". NOTE: Filmed as Tarzan in Istanbul (1952).
- (1918) Novel: "The Land That Time Forgot". NOTE: Filmed as The Land That Time Forgot (1974), The Land That Time Forgot (2009).
- (1918) Novel: "The People That Time Forgot".. NOTE: Filmed as The People That Time Forgot (1977).
- (1912) Novel: "Tarzan of the Apes". NOTE: Filmed as Tarzan (1999), Greystoke: The Legend of Tarzan, Lord of the Apes (1984), Tarzan the Ape Man (1932), The Romance of Tarzan (1918), Tarzan of the Apes (1918), Tarzan in Istanbul (1952).
- (1924) Novel: "Tarzan and the Golden Lion". NOTE: Filmed as Tarzan and the Golden Lion (1927).
- (1913) Novel: "The Return of Tarzan". NOTE: Filmed as Adventures of Tarzan (1921).
- (1940) Novel: "Skeleton Men of Jupiter".
- (1924) Novel: "Tarzan and the Ant Men".
- (1927) Novel: "Tarzan, Lord of the Jungle".
- (1928) Novel: "Tarzan and the Lost Empire".
- (1929) Novel: "Tarzan at the Earth's Core".
- (1930) Novel: "Tarzan, The Invincible".
- (1931) Novel: "Tarzan Triumphant".
- (1932) Novel: "Tarzan and the City of Gold".
- (1933) Novel: "Tarzan and the Lion Man".
- (1935) Novel: "Tarzan and the Leopard Men".
- (1935) Novel: "Tarzan's Quest".
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