Agricultural Rings of a Bernal Sphere
Bernal Sphere Cutaway — Rick Guidice
Interior of a Bernal Sphere — Rick Guidice
O’Neill Cylinder Interior — Rick Guidice
Torus Cutaway — Rick Guidice
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7th War Loan: Now All Together — C. C. Beall, 1945
A Book Mark Would Be Better! — Arlington Gregg, 1936–1940
A Crater in Scalloped Terrain
A Family of Vipers
