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Books

The Hollow Earth
The Hollow Earth Raymond Bernard 1964
The Book of Earths: Hollow Earth, Ancient Maps, Atlantis
The Book of Earths: Hollow Earth, Ancient Maps, Atlantis Edna Kenton 1928
The Smoky God, Or, a Voyage to the Inner World
The Smoky God, Or, a Voyage to the Inner World Willis George Emerson 1908
Phantom of the Poles
Phantom of the Poles William Reed 1906
The Kingdom of Agharttha: A Journey into the Hollow Earth
The Kingdom of Agharttha: A Journey into the Hollow Earth Marquis Alexandre Saint-Yves d'Alveydre 1886
The Symmes' Theory of Concentric Spheres
The Symmes' Theory of Concentric Spheres Americus Symmes 1878
The Coming Race
The Coming Race Edward Bulwer-Lytton 1871
The Hollow Globe
The Hollow Globe W.F. Lyons 1868