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  1. Could We Survive Inside an O'Neill Cylinder?

    Could We Survive Inside an O'Neill Cylinder?

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  4. A 1904 record scam - Hiawatha March played on a Busy Bee Cylinder Machine with proprietary mandrel

    A 1904 record scam - Hiawatha March played on a Busy Bee Cylinder Machine with proprietary mandrel

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  5. MURDER IN THE CLOUDS (1934) Lyle Talbot, Ann Dvorak, Gordon Westcott | Crime, Mystery, Romance | B&W

    MURDER IN THE CLOUDS (1934) Lyle Talbot, Ann Dvorak, Gordon Westcott | Crime, Mystery, Romance | B&W

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  7. People Could Live in Rotating Cones On the Moon or Mars in the Future

    People Could Live in Rotating Cones On the Moon or Mars in the Future

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  9. Top 10 Cosmic Constructions: Universe's Grandest Infrastructures

    Top 10 Cosmic Constructions: Universe's Grandest Infrastructures

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