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Mars Series
· A Princess of Mars (1912) Goulden 1948, Four Square 1961
· The Gods of Mars (1913) Goulden 1953, Four Square 1961
· The Warlord of Mars (1914) Goulden 1953, Four Square 1961
· Thuvia, Maid of Mars (1916) Goulden 1953, Four Square 1962
· The Chessmen of Mars (1922) Goulden 1954, Four Square 1962
· The Master Mind of Mars (1927) Goulden 1955, Four Square 1962
· A Fighting Man of Mars (1930) Goulden 1954
· Swords of Mars (1934) Four Square 1967
· Synthetic Men of Mars (1939) Four Square 1964
· Llana of Gathol (1941) Four Square 1967
· John Carter of Mars (1964, 3 stories from 1940-1943) Four Square 1967
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Tarzan series
· Tarzan of the Apes (1912) Goulden 1952, Four Square 1959
· The Return of Tarzan (1913) Goulden 1951, Four Square 1959
· The Beasts of Tarzan (1914) Goulden 1951, Four Square 1960
· The Son of Tarzan (1915) Goulden/Pinnacle 1953, Four Square 1959
· Tarzan and the Jewels of Opar (1916) Goulden 1951, Four Square 1959
· Jungle Tales of Tarzan (stories 1916-1917) Goulden/Pinnacle 1954, Four Square 1961
· Tarzan the Untamed (1919) Goulden 1950, Four Square 1959
· Tarzan the Terrible (1921) Goulden/Pinnacle 1953, Four Square 1960
· Tarzan and the Golden Lion (1922) Goulden/Pinnacle 1953, Four Square 1960
· Tarzan and the Ant Men (1924) Goulden/Pinnacle 1953 Four Square 1959,
· Tarzan, Lord of the Jungle (1927) Goulden 1949, Four Square 1963
· Tarzan and the Lost Empire (1928) Goulden 1949, Four Square 1964
· Tarzan at the Earth's Core (1929) Methuen 1941, Goulden 1949, Four Square 1959
· Tarzan the Invincible (1930) Goulden 1949, Four Square 1961
· Tarzan Triumphant (1931) Goulden 1959, Four Square 1961
· Tarzan and the City of Gold (1932) Goulden 1950, Four Square 1961
· Tarzan and the Lion Man (1933) Goulden 1950, Four Square 1965
· Tarzan and the Leopard Men (1932) Goulden 1950, Four Square 1961
· Tarzan's Quest (1935) Goulden 1949, Four Square 1960
· Tarzan the Magnificent (1936) Goulden 1950, Four Square 1959
· Tarzan and the Forbidden City (1938) Goulden 1950, Four Square 1965
· Tarzan and the Foreign Legion (1947 written in 1944) Goulden 1950 Four Square 1964
· Tarzan and the Madman (1964, written in 1940), Four Square 1966
· Tarzan and the Castaways (1965, stories from 1940-1941), Four Square 1966
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Pellucidar series
· At the Earth's Core (1914) Tandem 1973
· Pellucidar (1915) Goulden/Pinnacle 1955, Tandem 1973
· Tanar of Pellucidar (1929) Goulden/Pinnacle 1953, Tandem 1974
· Tarzan at the Earth's Core (1929) Methuen 1941, Goulden 1949
· Back to the Stone Age (1937) Tandem 1974
· Land of Terror (1944, written in 1939) Tandem 1974
· Savage Pellucidar (1963, stories from 1942) Tandem 1974
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Venus series
· Pirates of Venus (1932) Goulden/Pinnacle 1954, Four Square 1963
· Lost on Venus (1933) Goulden/Pinnacle 1953, Four Square 1965
· Carson of Venus (1938) Goulden 1950 Four Square 1967
· Escape on Venus (1946, stories from 1941-1942) Four Square 1966
· The Wizard of Venus (1970, written in 1941) Four Square 1973
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Out for Series
The Land That Time Forgot (1918) Methuen 1937, Tandem 1975
The People That Time Forgot (1918) Tandem 1975
Out of Time's Abyss (1918) Tandem 1975
The Moon Maid (1923, revised 1925; The Moon Men)
o Part I: The Moon Maid. Tandem 1975
o Part II: The Moon Men Tandem 1975
The Monster Men (1913) Tandem 1976
· The Lost Continent (1916; a.k.a. Beyond Thirty) Tandem 1977
· Beyond the Farthest Star (1942) Tandem 1976
· The Cave Girl (1913, revised 1917) Goulden/Pinnacle 1954, Tandem 1977
· The Eternal Lover 1914 aka The Eternal Savage Goulden/Pinnacle 1953 Tandem 1976
· Jungle Girl 1931; (a.k.a. Land of the Hidden Men) Tandem 1976
· The Bandit of Hell's Bend (1924) Goulden/Pinnacle 1954
· The Outlaw of Torn (1914) Goulden/Pinnacle 1953
· The Girl from Hollywood (1922) Gourden/Pinnacle 1954
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