Freedom 7 : The Historic Flight of Alan B. Shepard, Jr.
Colin Burgess
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Liberty Bell 7 : The Suborbital Mercury Flight of Virgil I. Grissom
Colin Burgess
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Living Among Giants : Exploring and Settling the Outer Solar System
Michael Carroll
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Friendship 7 : The Epic Orbital Flight of John H. Glenn, Jr.
Colin Burgess
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Enhancing Hubble's Vision : Service Missions That Expanded Our View of the Universe
David J. Shayler
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Picture This! : Grasping the Dimensions of Time and Space
Michael Carroll
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Sigma 7 : The Six Mercury Orbits of Walter M. Schirra, Jr.
Colin Burgess
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