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Gus Grissom - Wikipedia
New Evidence Shows That Gus Grissom Did Not Accidentally Sink …
The Sinking of Liberty Bell 7: Gus Grissom’s Near-Fatal Mission
40th Anniversary of Mercury 7: Virgil Ivan "Gus" Grissom - NASA
Mercury Seven - Wikipedia
Researchers: Gus Grissom Didn't Trigger Mercury Capsule Hatch ... - NPR
Gus Grissom: 2nd American in Space
Gus Grissom taught NASA a hard lesson: “You can hurt yourself in …
Former Astronaut Virgil I. Grissom - NASA
The Mercury 7 Astronauts: NASA's First Space Travelers