LINGO LIBRARY · 54329Symmes's Theory of Concentric Spheres Demonstrating that the Earth is hollow, habitable within, and widely open about the poles✳McBride, James · Symmes, John ClevesENB2 · EstimatedSymmes's Theory of Concentric Spheres Demonstrating that the Earth is hollow, habitable within, and widely open about the polesMcBride, James · Symmes, John Cleves