Pulp Magazines

• Ace G Man Stories (1936-1943)
• Action Stories (1922-1950)
• Adventure (1910-1971)
• Amazing Stories (1926-2000)
• Argosy (1882-1979)
• Black Mask (1920-1951)
• Dime Detective (1931-1953)
• Doc Savage (1933-1949)
• Flying Aces (1928-1943)
• Horror Stories (1935-1941)
• Jungle Stories (1938-1954)
• Marvel Tales (1938-1951)
• Oriental Stories (1930-1934)
• Planet Stories (1939-1953)
• The Shadow (1931-1941)
• Spicy Adventure (1934-1946)
• Spicy Detective (1934-1947)
• Startling Stories (1939-1955)
• Thrilling Detective (1931-1953)
• Thrilling Wonder Stories (1936-1955)
• The Underworld (1927-1935)
• Weird Tales (1923-2008)

Non-Fiction

Periodicals

• Popular Mechanics, Popular Mechanics Archive 1905-2005
• Time Magazine Archive

Reference

Standish, David

• Hollow Earth: The Long and Curious History of Imagining Strange Lands, Fantastical Creatures, Advanced Civilizations and Marvelous Machines Below the Earth's Surface (2007)

Fitting, Peter

• Subterranean Worlds: A Critical Anthology (2004)

Hatcher Childress, David

• Lost Continents and the Hollow Earth (1999)

Fiction

Burroughs, Edgar Rice

Caspak series

• The Land That Time Forgot (1918)
• The People That Time Forgot (1918)
• Out of Time’s Abyss (1918)

Pellucidar series

• At the Earth's Core (1914)
• Pellucidar (1923)
• Tanar of Pellucidar (1928)
• Tarzan at the Earth's Core (1929)
• Back to the Stone Age (1937)
• Land of Terror (1944)
• Savage Pellucidar (1963)

Barsoom series

• A Princess of Mars (1912)
• The Gods of Mars (1914)
• The Warlord of Mars (1918)
• Thuvia, Maid of Mars (1920)
• The Chessmen of Mars (1922)
• The Master Mind of Mars (1928)
• A Fighting Man of Mars (1931)
• Swords of Mars (1936)
• Synthetic Men of Mars (1940)
• Llana of Gathol (1948)
• John Carter of Mars (1964)

Venus Series

• Pirates of Venus (1934)
• Lost on Venus (1935)
• Carson of Venus (1939)
• Escape on Venus (1946)
• The Wizard of Venus (1970)

Caidin, Martin

• #7 Indiana Jones and the Sky Pirates (1993)
• #8 Indiana Jones and the White Witch (1994)

Conan Doyle, Arthur

• The Lost World (1912)
• The Poison Belt (1913)
• The Land of Mist (1926)
• When the World Screamed (1928)
• The Disintegration Machine (1929)

Crichton, Michael

• Congo (1980)
• Jurassic Park (1990)
• The Lost World (1995)
• Timeline (1999)

Estes, Rose

• Indiana Jones and the Lost Treasure of Sheba (1984)

Haggard, H. Rider

• King Solomon's Mines (1885)
• She (1886)
• Allan Quatermain (1887)
• Ayesha: the Return of She (1905)
• Marie (1912)
• Child of Storm
• Allan Quatermain and Finished (1917)
• Allan and the Ice-Gods? (1927)

Holberg, Ludvig

• The Journey of Niels Klim to the World Underground (1741)

L'Amour, Louis

• The Collected Short Stories - Volume 4: The Adventure Stories (2006)

MacGregor, Rob

• Indiana Jones and the Last Crusade (1989)
• #1 Indiana Jones and the Peril at Delphi (1991)
• #2 Indiana Jones and the Dance of the Giants (1991)
• #3 Indiana Jones and the Seven Veils (1991)
• #4 Indiana Jones and the Genesis Deluge (1992)
• #5 Indiana Jones and the Unicorn's Legacy (1992)
• #6 Indiana Jones and the Interior World (1992)

McCoy, Max

• #9 Indiana Jones and the Philosopher's Stone (1995)
• #10 Indiana Jones and the Dinosaur Eggs (1996)
• #11 Indiana Jones and the Hollow Earth (1997)
• #12 Indiana Jones and the Secret of the Sphinx (1999)

Rollins, James

• Indiana Jones and the Kingdom of the Crystal Skull (2008)

Rucker, Rudy

• The Hollow Earth (1990)

Stine, R. L.

• Indiana Jones and the Giants of the Silver Tower (1984)
• Indiana Jones and the Cult of the Mummy's Crypt (1985)

Verne, Jules

• Journey to the Center of the Earth (1864)
• In Search of the Castaways (1867)
• 20,000 Leagues Under the Sea (1869)
• Around the World in Eighty Days (1873)
• The Mysterious Island (1874)
• Robur the Conqueror (1886)
• Master of the World (1904)

Wells, H. G.

• The Time Machine (1895)
• The Island of Dr. Moreau (1896)
• The Invisible Man (1897)
• The War of the Worlds (1898)

Wenk, Richard

• Indiana Jones and the Eye of the Fates (1984)