John Glenn - Wikipedia

File:John Glenn Mercury (small).jpg - Wikimedia Commons

John Glenn High School (Westland, Michigan) - Wikipedia

File:Launch of Friendship 7 - GPN-2000-000686.jpg - Wikipedia

John Glenn - Wikipedia Bahasa Melayu, ensiklopedia bebas

John Glenn (1960s outfielder) - Wikipedia

John Glenn, famed astronaut and former senator, dies at 95

Working - Katherine Johnson was a mathematician for NASA - National Aeronautics and Space Administration. Her calculations were critical in the successful journey of John Glenn, the first American in orbit.

John Glenn - Wikipedia

File:John Glenn - Celebrating a Life of Service (NHQ201612170021).jpg - Wikipedia